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Friday, February 23, 2007

Inexperienced Gem Dealers In Gem Markets

New findings suggest that gem dealers if they are young and inexperienced can be fooled and laminated. Younger generations are always lured in because the perception is gemstones always bring in money. They are overconfident with little or no product knowledge, tech savvy with low attention span, laidback with less patience and perseverance; ignorant, fearful, absentminded, greedy and more likely tend to be deficient in CS (commonsense). The younger gem dealers deviate from established concepts by luring in the inexperienced consumers and general public creating more bubbles. Trust and values are replaced with bluff and deceit. With time underperformance gets worse. The gem market is never compassionate. Gem dealers come and go, but gemstones live on. Somewhat surprisingly the older gem dealers know how to avoid the gas bubble trap. They have had more experience and lived through bad years. They keep a low profile and chose customers and friends selectively. They live a simple life. This tends to make them more cautious. Unfortunately the general public and consumers do not take time to look at history. They have short memory. Learning comes by doing. At the peak, the inexperienced consumers in gemstones end up stocking a significant portion of gemstones and may have the leverage to sway prices. The concept of gemstone business is a combined behavior of millions of people responding to information, disinformation and misinformation.

American Splendor Movie

Memorable quotes from the movie:

Harvey Pekar: My name is Harvey Pekar - that's an unusual name - Harvey Pekar. 1960 was the year I got my first apartment and my first phone book. Now imagine my surprise when I looked up my name and saw that in addition to me, another Harvey Pekar was listed. Now I was listed as "Harvey L. Pekar", my middle name is Lawrence, and he was listed as "Harvey Pekar" therefore his was a - was a pure listing. Then in the '70s, I noticed that a third Harvey Pekar was listed in the phone book, now this filled me with curiousity. How can there be three people with such an unusual name in the world, let alone in one city? Then one day, a person I work with, expressed her sympathy with me, concerning what she thought, was the death of my father, and she pointed out an obituary notice in the newspaper for a man named Harvey Pekar. And one of his sons was named Harvey. And these were the other Harvey Pekar's. And six months later, Harvey Pekar Jr. died. And although I've met neither man, I was filled with sadness, 'what were they like?', I thought, it seemed that our lives had been linked in some indefineable way. But the story does not end there, for two years later, another 'Harvey Pekar' appeared in the phone book. Who are these people? Where do they come from? What do they do? What's in a name? Who is "Harvey Pekar"?

Hug Your Customer Philosophy

Europa Star writes:

Jack Mitchell, CEO of Mitchells of Westport & Richards in Greenwich, California, USA, and author of best selling book “Hug Your Customer, The Proven Way to Personalize Sales and Achieve Astounding Results,” explains why customers are very important in any business.

The US$65 million third generational business is now run by his 7 sons and nephews. He explains, “We get to know each and every one of our customers individually, we know their birth dates, their anniversaries, and we let them know every chance we can, how much we appreciate them.”

He also explains how his sales associates, his tailors and his office staff go above and beyond what other retailers are doing. “They give out “hugs” both physical and emotional ones. It’s the little things from remembering a birthday to sending a personalized note of thanks from the CEO to sending an unexpected give like an orchid plant. By building personalized relationships, we have been able to expand our business,” added Mitchell.

“We know that we could not grow our business without the people who truly believe in our philosophy. We hire people who are honest and open, have positive attitudes, are competent and self confident, have passion and are genuinely nice people,” said Mitchell. “I know this sounds basic – but so many retailers don’t follow these rules.”

More info @ http://europastar.com/europastar/headlines/article_display.jsp?vnu_content_id=1003542135

Semi Precious Stones

(via Mineral Digest) Louis Zara writes:

Semi precious stones don’t exist. This is contrary to one of the jewelry industry’s most cherished myths. Nevertheless, it’s true: there are no semi-precious stones. Every gemstone, if it deserves the name at all, is either precious or it is not precious—as simple as that. Semi-precious is as meaningless as semi-attractive or semi-honest.

Consider the criteria applied to gemstones: value; hardness; scarcity; beauty. This order is such that what can he had easily is not valued highly. If diamonds were only fifty cents a carat, how many girls would want one for the engagement ring? If rubies were as plenty as raisins, would anyone care to wear them? I believe, no matter how hard or rare or valuable a gemstone may be, its beauty come first.

Today the diamond is accepted as the king because it is the hardest, and therefore the most durable, of gemstones. The jeweler likes diamonds because he can, or at least in sizes under five carats, always get more for his customers. Yet, except in larger sizes, diamonds are common. Beautiful rubies, even in smaller sizes, are harder to obtain, and emeralds without flaw are almost impossible to find. Diamond outranks them for hardness and brilliance, but, to many, rubies and emeralds are more beautiful.

If hardness is the only criterion, where should we rank opal, which has such flashing red, blue, and green fire that no lover of beauty can look at it without admiration? Each individual opal displays an exquisiteness of its own: Far easier to match diamonds than to match opals. Yet compared to diamond, ruby or sapphire, the opal is soft and must be worn with care. Are opals then to be dismissed as semi-precious?

What shall we say about jade, which in the imperial green quality is as fine as the elegant emerald and even scarcer, so that a great jade necklace must rank among the world’s splendid jewels? Jade cannot be compared to diamond, ruby or sapphire, but should it therefore be called semi-precious?

The average jeweler may resent these statements; his primary aim is to sell, and he can sell diamonds more readily than rubies, sapphires, opals or jade. Yet to those of us who are interested in educating the public, opals and jade, and the many other gems now blandly classed as semi-precious, deserve more intelligent appreciation, especially since their remarkable beauty delights the millions of new gem lovers.

Another example: red garnets have been plentiful since antiquity. Yet clear red garnets of appealing size are not common, the orange garnet hessonite is scarce in large sizes, and the rare green demantoid garnet, hardly known to the public, has an appeal that rivals the emerald. Fine demantoids or rhodolites, make truly impressive gemstones. Shall these, too, be labeled semi-precious?

No gem mineral displays a broader range of colors than the tourmaline. The greens have been relatively abundant. But large reds are scarce, and sapphire blues even scarcer, while the splendid watermelon tourmalines (greens and red together) are most unusual. Are such gems, too, semi-precious?

What about the alexandrite, that astonishing variety of chrysoberyl which is green in daylight and raspberry red by artificial light? It is harder than emerald. No gem is scarcer in sizes over four or five carats. Should the alexandrite, too, be put down as semi-precious?

What of aquamarine, which is a beryl and so is kin to the emerald? What of the amethyst, plentiful to be sure, but in truly lovely violet-purples and dark reds amazingly handsome?

What we seem to come down to is an economic criterion. If a gemstone is scarce, or an artificial demand has been created, that gemstone goes up in value, and is hailed as precious. If a gemstone is abundant, it is branded semi-precious.

Maybe that was acceptable when gems were chiefly status symbols. The rich dominated the market, and the rich must have only the precious. But in the last generation or so, with wider knowledge of Nature’s large family of gemstones becoming available, the emphasis has been less on status and more on beauty—and beauty is not restricted to the traditional Big Four: diamond, ruby, sapphire and emerald.

Today young people, whose horizons on gemstones have broadened, turn more and more to garnets, tourmalines, and topazes of all colors, to amethysts, and to many other gems little appreciated by their fathers. Try to sell this new generation of gem lovers that a rich blue lapis lazuli or a remarkable green jade or a delicate peach morganite is merely semi-precious!

The time has come for the diamond, ruby, sapphire and emerald to share the world precious with other stones. For in the world of gems, a stone is either precious or it is not precious. Semi-precious stones do not exist.

Gem Identification Made Easy

By Antoinette L Matlins & A C Bonanno
Gemstone Press
1994/1989 ISBN 0-943763-03-7

Gemstone Press writes:

Today, knowing your gems, being absolutely sure about what you are buying and selling, is essential. Major changes in the gem world—new synthetic stones, new treatments to enhance and conceal, new gems, and more stones available in every hue and tone of color—make accurate gem identification more important than ever to both buyers and sellers.

Whether you are the owner of a large retail jewelry chain or small family-run business, someone who enjoys collecting or acquiring gems for personal pleasure, or a serious investor, insufficient knowledge can be costly. It can result in a bad purchase, damage to a reputation, and, equally significant, failure to recognize an opportunity.

With minimal effort and a nominal investment in several instruments, almost anyone can venture into the world of gemology and begin to experience the thrill and fun of discovery—learning just what a particular stone really is. You can learn to separate real from imitation, one look-alike from another, dyed from natural, and so on. Sometimes just a basic knowledge of how to use a simple instrument is all that is needed to avoid an expensive mistake or recognize a profitable opportunity.

Contrary to what many people believe, it isn’t necessary to spend $100000 (or more) for elaborate gem testing equipment. For less than $200, one can begin with just three pocket instruments: the loupe, Chelsea filter, and dichroscope. Use together, these three simple, portable instruments can enable one to identify almost 85% of the colored gemstone materials encountered today as well as diamonds and most diamond look-alikes. Once you have mastered these three, you can add other instruments to help you identify the remaining gemstone material and confirm identification made with pocket instruments.

While any one of these instruments alone is unusually insufficient to make a conclusive identification, a combination of two or more will usually be enough to tell you what you really have. The key, of course, is knowing how to use them and what to look for. That’s how Gem Identification Made Easy will help you. While years of training and experience are necessary to become qualified as a professional gemologist, with practice and a little hands-on work, you will find it takes surprisingly little time before you will feel more confident about what you are buying and selling.

Thursday, February 22, 2007

Gemstone Market

In my opinion the gemstone market is definitely motivated by spontaneous human reactions, ignorance, fear and greed.

Gemstone Business

Think about it. Buying and selling gemstones is an art of passing gemstones from hand to hand until it finally disappears.

To Catch A Thief Movie

Memorable quote (s) from the movie:

Frances Stevens (Grace Kelly): Doesn't it make you nervous to be in the same room with thousands of dollars worth of diamonds, and unable to touch them?

John Robie (Cary Grant): No.

Frances Stevens (Grace Kelly): Like an alcoholic outside of a bar on Election Day?

John Robie (Cary Grant): Wouldn't know the feeling.

Frances Stevens (Grace Kelly): I have a feeling that tonight you're going to see one of the Riviera's most fascinating sights. I was talking about the fireworks!

John Robie (Cary Grant): I never doubted it.

Frances Stevens (Grace Kelly): The way you looked at my necklace, I didn't know... Even in this light, I can tell where your eyes are looking. Look, John. Hold them. Diamonds... The only thing in the world you can't resist. Then tell me you don't know what I'm talking about. Ever had a better offer in your whole life? One with everything?

John Robie (Cary Grant): I've never had a crazier one.

Frances Stevens (Grace Kelly): Just as long as you're satisfied!

John Robie (Cary Grant): You know as well as I do: this necklace is imitation.

Frances Stevens (Grace Kelly): Well, I'm not.

How To Buy And Sell Gems

By Benjamin Zucker
Times Books
1979 ISBN 0-8129-0903-8

Times Books writes:

Mr Zucker has used his intimate knowledge as a dealer in gems, as well as general investment counselor, to write the first book exclusively devoted to guiding the would be investor in gems.

Richly illustrating his text with photographs of gems (most of them in his own collection), Mr Zucker explains the geological origins of the various precious gems and their relative values. He offers a unique instructional guide to assessing the quality of a gem (the difference in color, for example, between a ruby from Burma and one from Ceylon (Sri Lanka), and how to judge its present and likely future worth, with precise details on past and present prices.

The owner of what may be the most valuable sapphire in the world (it is on loan to the Museum of Natural History in New York City), Mr Zucker sketches the history of gem collecting through the voyages of Marco Polo, and great collection of Iran, to the Diamond Syndicate, explaining how it first developed and how it operates today. He takes the reader on a trip through the gem mining areas of the world in Ceylon (Sri Lanka), Thailand, Burma, and Colombia, and lives his narrative throughout with anecdotes both personal and legendary, about custom, cutting, faceting, and dealing.

Most practically, several portfolios are suggested for the investor with $5000 to spend and the investor who is prepared to spend $20000 to $100000. With synthetic stones appearing more frequently on the market, Mr Zucker explains their introduction and methods, offers guidelines on how to determine if a gem is synthetic or genuine, and presents the latest discoveries in gemology.

Whether for the person interested only in the beauty and lore of these stones, or the person who wishes to buy gems for investment purposes, How To Buy And Sell Gems is an indispensable guide.

Wednesday, February 21, 2007

Understanding Gemstones

The general public has not by and large taken Understanding Gemstones 101, and those who did sit through it have probably forgotten much of what they learned.

Being There Movie

Memorable quote (s) from the movie:

President "Bobby" (Jack Warden): Mr. Gardner, do you agree with Ben, or do you think that we can stimulate growth through temporary incentives?

Chance the Gardener (Peter Sellers): As long as the roots are not severed, all is well. And all will be well in the garden.

President "Bobby" (Jack Warden): In the garden.

Chance the Gardener (Peter Sellers): Yes. In the garden, growth has it seasons. First comes spring and summer, but then we have fall and winter. And then we get spring and summer again.

President "Bobby" (Jack Warden): Spring and summer.

Chance the Gardener (Peter Sellers): Yes.

President "Bobby" (Jack Warden): Then fall and winter.

Chance the Gardener (Peter Sellers): Yes.

Benjamin Rand (Melvyn Douglas): I think what our insightful young friend is saying is that we welcome the inevitable seasons of nature, but we're upset by the seasons of our economy.

Chance the Gardener (Peter Sellers): Yes! There will be growth in the spring!

Benjamin Rand (Melvyn Douglas): Hmm!

Chance the Gardener (Peter Sellers): Hmm!

President "Bobby" (Jack Warden): Hmm. Well, Mr. Gardner, I must admit that is one of the most refreshing and optimistic statements I've heard in a very, very long time. I admire your good, solid sense. That's precisely what we lack on Capitol Hill.

The Language Of Gemstones: 1

I speak two languages: Body and English.
-Mae West

I love people and gemstones. I work with people from around the world who want to learn about gemstones and their values so that they can make a living buying or selling gemstones. In a way people are like gemstones of mixed qualities. They come in all shapes, sizes, colors and disguises. I enjoy working with them.

No two people are alike. The amazing thing about people is: they have beauty, rarity, and complex behavioral traits, but not always durable. Every person is a unique species with its own chemical, physical and emotional properties. Under proper magnification most are emotionally complex gemstones. I have yet to find a flawless or near flawless person. Most are born with inclusions, live their lives one way or the other and die, but gemstones live on.

For some time I have been noticing a strange phenomenon. Most people have attention deficit traits. They see, but don’t see; they listen, but don’t listen, and they like gemstones. They won't admit it, but they are unique. They are good pretenders. At times I get more passionate about people than gemstones because gemstones don’t talk. Really.

I also like the silence and solitude of gemstones. They are spiritual and therapeutic. People always love to talk, all the time. Correct me if I am wrong? Gemstones have a strange way of connecting with people—by its color, shape, size, flashes and a good story. Gemstones have taught me to become a keen observer so that I am able to analyze complex situations and find solutions; sort of identifying gemstones and people without instruments. It’s not perfect science, but it works.

Ruby and Sapphire

By Richard W Hughes
RWH Publishing
1997 ISBN 0-9645097-6-8

Richard Hughes writes:

Many in the gemological community take a dim view of non-scientific aspects of the subject. They question the need for details on mystical beliefs, history, even the gem business itself. In the author’s view, this is not only unfortunate, but unduly restrictive. Far too many gemological treatises are clinical heartless shells, with any trace of spirit sucked out in the name of science, proper diction or decorum. Considering we are fortunate to work with one of the most romantic products on the planet, this is all the more surprising.

Godehard Lenzen has rightly pointed out that gemology is not merely a subset of mineralogy, but simply knowledge of a certain type of merchandise. I subscribe to the Lenzen view. To my way of thinking, gemology is a rich tapestry of interwoven disciplines. It’s thread include not just mineralogy, physics, chemistry, crystallography and geology, but also history, trade, economics, decorative arts, religion, mysticism and magic. Yes, even magic.

Thus, what follows is not merely the science, but also the gemology of ruby and sapphire. I hope to convey its romance, its history, its beating heart, its spirit, its magic. If I have succeeded in capturing even a portion of that magic, then this book is a success.

More info @ RWH Publishing & Books, PO Box 2015, Fallbrook, CA 92088 USA

Tuesday, February 20, 2007

Rainbow Calsilica

Rainbow calsilica is an eye-catching product that is suitable for beads, fetishes, cabochons, carvings and jewelry. Jewelry designers love to work with this material because of its beautiful color patterns, and it is perceived as work of art. Some gem dealers believe that the material is mined near Chihuahua, Mexico. The material is composed of calcite, but may be enhanced with artificial coloring substances and then stabilized with plastic. Rainbow silica is available in the marketplace for all to admire. If in doubt consult a reputed gem testing laboratory.

Doing Business In Brazil

World Bank / IFC writes:

Brazilian cities vary significantly in the ease of doing business, according to the new Doing Business in Brazil report. This report is the second state-level report (last year's Doing Business in Mexico was the first), and it highlights the increasing importance of state and city level reforms in a globalized world. Cities, as much as countries, are now competing for investments.

Points of interest
Compared with Mexico, Brazilian cities perform better when it comes to the cost of registering property. But despite identical regulations across Brazil, there is a wide variation in the time it takes to transfer property – less than a month in São Luís, almost three months in Campo Grande. Also difficult in Campo Grande is contract enforcement. It can take over four years, while São Paulo's 18 months is the easiest. Complying with business regulations is easiest in Brasilia, but in Belo Horizonte it takes a mere two days to create and register collateral, as compared to 45 days in Brasilia. The tax burden is heavy across Brazil, in terms of tax rates and administrative complexities. Businesses in Rio de Janeiro have one of the highest tax burdens in the world. Easing regulation and establishing a favorable business environment for entrepreneurs is key to creating jobs and equitable growth. Brazil has undertaken reforms at the national, state, and municipal level but this report suggests areas where further reforms are possible.

More info @ http://www.doingbusiness.org/main/brazil.aspx

The GodFather

Memorable quote (s) from the movie:

Jack Woltz (John Marley): Johnny Fontane never gets that movie. That part is perfect for him, it'll make him a big star, and I'm gonna run him out of the business - and let me tell you why: Johnny Fontane ruined one of Woltz International's most valuable proteges. For five years we had her under training - singing lessons, acting lessons, dancing lessons. I spent hundreds of thousands of dollars on her, I was gonna make her a big star. And let me be even more frank, just to show you that I'm not a hard-hearted man, and that it's not all dollars and cents: She was beautiful; she was young; she was innocent. She was the greatest piece of ass I've ever had, and I've had 'em all over the world. And then Johnny Fontane comes along with his olive oil voice and guinea charm, and she runs off. She threw it all away just to make me look ridiculous! And a man in my position can't afford to be made to look ridiculous! Now you listen to me, you smooth talking son-of-a-bitch. Let me lay it on the line for you and your boss, whoever he is. Johnny Fontane will never get that movie. I don't care how many dago guinea wop greaseball goombahs come out of the woodwork.

The Federal Trade Commission’s Guide for the Jewelry, Precious Metals and Pewter Industries

FTC writes:

23.26 Misuse of the words "flawless," "perfect," etc.

(a) It is unfair or deceptive to use the word "flawless" as a quality description of any gemstone that discloses blemishes, inclusions, or clarity faults of any sort when examined under a corrected magnifier at 10-power, with adequate illumination, by a person skilled in gemstone grading.

(b) It is unfair or deceptive to use the word "perfect" or any representation of similar meaning to describe any gemstone unless the gemstone meets the definition of "flawless" and is not of inferior color or make.

(c) It is unfair or deceptive to use the word "flawless," "perfect," or any representation of similar meaning to describe any imitation gemstone.

Appendix--Exemptions Recognized in the Assay for Quality of Gold Alloy, Gold Filled, Gold Overlay, Rolled Gold Plate, Silver, and Platinum Industry Products.
(a) Exemptions recognized in the industry and not to be considered in any assay for quality of a karat gold industry product include springs, posts, and separable backs of lapel buttons, posts and nuts for attaching interchangeable ornaments, metallic parts completely and permanently encased in a nonmetallic covering, field pieces and bezels for lockets,10 and wire pegs or rivets used for applying mountings and other ornaments, which mountings or ornaments shall be of the quality marked.

Note: Exemptions recognized in the industry and not to be considered in any assay for quality of a karat gold optical product include: the hinge assembly (barrel or other special types such as are customarily used in plastic frames); washers, bushings, and nuts of screw assemblies; dowels; springs for spring shoe straps; metal parts permanently encased in a non-metallic covering; and for oxfords,11 coil and joint springs.

(b) Exemptions recognized in the industry and not to be considered in any assay for quality of a gold filled, gold overlay and rolled gold plate industry product, other than watchcases, include joints, catches, screws, pin stems, pins of scarf pins, hat pins, etc., field pieces and bezels for lockets, posts and separate backs of lapel buttons, bracelet and necklace snap tongues, springs, and metallic parts completely and permanently encased in a nonmetallic covering.

Note: Exemptions recognized in the industry and not to be considered in any assay for quality of a gold filled, gold overlay and rolled gold plate optical product include: screws; the hinge assembly (barrel or other special types such as are customarily used in plastic frames); washers, bushings, tubes and nuts of screw assemblies; dowels; pad inserts; springs for spring shoe straps, cores and/or inner windings of comfort cable temples; metal parts permanently encased in a non-metallic covering; and for oxfords, the handle and catch.

(c) Exemptions recognized in the industry and not to be considered in any assay for quality of a silver industry product include screws, rivets, springs, spring pins for wrist watch straps; posts and separable backs of lapel buttons; wire pegs, posts, and nuts used for applying mountings or other ornaments, which mountings or ornaments shall be of the quality marked; pin stems (e.g., of badges, brooches, emblem pins, hat pins, and scarf pins, etc.); levers for belt buckles; blades and skeletons of pocket knives; field pieces and bezels for lockets; bracelet and necklace snap tongues; any other joints, catches, or screws; and metallic parts completely and permanently encased in a nonmetallic covering.

(d) Exemptions recognized in the industry and not to be considered in any assay for quality of an industry product of silver in combination with gold include joints, catches, screws, pin stems, pins of scarf pins, hat pins, etc., posts and separable backs of lapel buttons, springs, and metallic parts completely and permanently encased in a nonmetallic covering.

(e) Exemptions recognized in the industry and not to be considered in any assay for quality of a platinum industry product include springs, winding bars, sleeves, crown cores, mechanical joint pins, screws, rivets, dust bands, detachable movement rims, hat-pin stems, and bracelet and necklace snap tongues. In addition, the following exemptions are recognized for products marked in accordance with section 23.8(b)(5) of these Guides (i.e., products that are less than 500 parts per thousand platinum): pin tongues, joints, catches, lapel button backs and the posts to which they are attached, scarf-pin stems, hat pin sockets, shirt-stud backs, vest-button backs, and ear-screw backs, provided such parts are made of the same quality platinum as is used in the balance of the article.

Footnotes
1. The Guides for the Watch Industry, 16 CFR part 245, address watchcases and permanently attached watchbands.
2. See 23.4(c) for examples of acceptable markings and descriptions.
3.The term substantial thickness means that all areas of the plating are of such thickness as to assure a durable coverage of the base metal to which it has been affixed. Since industry products include items having surfaces and parts of surfaces that are subject to different degrees of wear, the thickness of plating for all items or for different areas of the surface of individual items does not necessarily have to be uniform.
4. A product containing 1 micron (otherwise known as µ) of 12 karat gold is equivalent to one-half micron of 24 karat gold.
5. See footnote 3.
6. Under the National Stamping Act, articles or parts made of gold or of gold alloy that contain no solder have a permissible tolerance of three parts per thousand. If the part tested contains solder, the permissible tolerance is seven parts per thousand. For full text, see 15 U.S.C. 295, et seq.
7. See footnote 3.
8. See footnote 3.
9. Under the National Stamping Act, sterling silver articles or parts that contain no solder have a permissible tolerance of four parts per thousand. If the part tested contains solder, the permissible tolerance is ten parts per thousand. For full text, see 15 U.S.C. 294, et seq.
10. Field pieces of lockets are those inner portions used as frames between the inside edges of the locket and the spaces for holding pictures. Bezels are the separable inner metal rings to hold the pictures in place.
11. Oxfords are a form of eyeglasses where a flat spring joins the two eye rims and the tension it exerts on the nose serves to hold the unit in place. Oxfords are also referred to as pince nez.

More info @ http://www.ftc.gov/bcp/guides/jewel-gd.htm

The Complete Handbook For Gemstone Weight Estimation

By Charles I Carmona
Gemania Publishing Company
1998 ISBN 0-9666370-0-3

Richard Liddicoat writes:

A serious problem for all of those who are called upon to appraise or identify the gems set in various types of jewelry is first to ascertain not only the identity of the gems, but also the weight of the gems in rings, bracelets, necklaces—or other forms. Often, the nature of the mounting makes it difficult.

Charles Carmona has spent many years assembling and / or developing a remarkably comprehensive set of weight estimation formulae for mounted diamonds, colored stones and pearls—and used them to prepare detailed tables based on millimeter measurements. Those who appraise, buy, sell, insure or loan on used or estate jewelry depend on accuracy in weight estimation. Such individuals engaged in activities involving a need for accuracy in weight estimations for estate purposes, appraising, identification, pawnbroking of jewelry, or other needs should consider such detailed tables a major resource in their estimating process. Obviously most practitioners have some means of estimating the weight of common shapes, but the number of shapes included in Carmona’s tables is unusual.

Obviously, estimation tables are only substitutes for direct weighing, but when that is not an option, accurate tables become a vital tool. It is also obvious that no individual would have access to every size and shape of every gemstone included in comprehensive tables. Many sizes and shapes were measured in quartz or synthetics for the differences in specific gravity. Extrapolation was used to fill in between measured samples.

Frequent users are likely to make their own adjustments to various elements of the tables as they employ them, but their availability in such detail should prove to be exceptionally useful to many in the jewelry industry.

About the author
Charles I Carmona has been active in the mineral collecting hobby and the gem and jewelry trade for over 30 years, from prospecting and mining to gem cutting, wholesale and retail sales, and extensive experience in the appraisal of all types of gemstones and jewelry. As a consultant to attorneys, accountants, banks, government agencies and the gem and jewelry trade, his reputation as an expert has been well established. The need to accurately estimate the weights of mounted gemstones on a daily basis led to this compendium of formulas and tables.

Monday, February 19, 2007

Gem Artists Of North America

Gem Artists of North America is a forum for artists and professionals of the gem art industry. They offer information about gem carvers and their various techniques.

More info @ http://www.gemartists.org

The Traveler

Pablo Neruda writes:

They are not so sad these stones.
Inside them lives the gold,
holding seeds of planets,
holding bells in their depths,
gauntlets of iron, marriage
of time with amethysts:
within they laugh with rubies!
they were nourished by lightning.

For what, traveler, beware
of the sadness of the road,
of the mysteries in the walls.

Much it cost me to learn
that not all is alive without,
and not all is dead within,
and that Age inscribes letters
with water and stone for no one,
so that none may know where,
so that none may understand.