The combination of spinel and chrondrodite has rarely been documented in gems. It is an indicator of Burmese origin in gem quality red spinel. Inclusion collectors should take note.
Showing posts with label Gems & Gemology. Show all posts
Showing posts with label Gems & Gemology. Show all posts
Thursday, March 03, 2022
Wednesday, March 02, 2022
Peridot From Pyaung-Gaung In Mogok, Myanmar
Take a look at the insightful research by Gems & Gemology team and GIA on the gemological characteristics of Burmese peridot and the unique locality. Must read.
Wednesday, December 29, 2021
Laboratory-Grown Diamond With Internal Laser Markings
Take a look at these markings that were created by accidental laser damage rather than laser inscription.
Monday, December 27, 2021
Glass Imitation Of Star Sapphire
Glass is the best imitation for colored stones. Product knowledge and standard gemological tests should easily separate natural blue star sapphires from imitations.
Tuesday, December 21, 2021
Apatite In Blue Sapphire
Each time you peer into a gemstone, you get a glimpse of the universe held within. Take a look at the blue sapphire
Monday, December 20, 2021
Hematite Rose Inclusion In Aquamarine
The hematite inclusions in this aquamarine seem to resemble a rose blossom composed of mathematical fractal.
Parisite Crystals In A Colombian Emerald
These rare parisite mineral inclusions have been found only in emeralds from the Muzo (Colombia) mine. Take a look.
Sunday, December 19, 2021
Iridescent Botryoidal Growth In Untreated Akoya Pearl
Take a look at the unusual pattern or orient seen in this akoya pearl.
Useful link: https://www.gia.edu/gems-gemology/fall-2021-iridescent-botryoidal-growth-untreated-akoya-pearl
Faceted Octahedral Diamond With Octahedral-Shaped Inclusion
A brilliant diamond faceter/polisher has provided a unique perspective on the cloud inclusions that makes this unusual diamond even more memorable. Take a look.
Saturday, December 18, 2021
Tourmaline In Paraíba Tourmaline
Here is an interesting example of a gem tourmaline that contains a tourmaline inclusion.
Fluid Inclusions In Chinese Ruby
Nature has no rules.
Useful link: https://www.gia.edu/gems-gemology/fall-2021-fluid-inclusions-chinese-ruby
Friday, December 17, 2021
Willemite In Topaz
The willemite crystals and other inclusions in this topaz from Jos in Plateau State, Nigeria is simply spectacular.
Fibers And Rods In Euclase
Here is a well-formed rare Euclase crystal with unusual color and spectacular inclusions. This crystal specimen should be kept intact to be enjoyed as a mineral specimen.
Thursday, December 16, 2021
Spectroscopic Characteristics Of Low-Temperature Heated Blue To Violet Spinel
Spinel is rarely treated, but some heated spinels are available in the gem trade due to demand. This report by researchers at GIA is a must read for gemologists, gem treatment specialists, gem dealers, jewelers and consumers.
Mabe Cultivation In Mayotte
Mabe from Mayotte has only appeared recently in the market. The exact supply is still unknown, and other similar products are cultivated in other parts of the world, including Southeast Asia, Australia, and some Pacific island nations. This material could help develop the economy of Mayotte, where all the operations take place and jewelry pieces with a French touch are locally made. Many thanks to researchers at GIA.
Wednesday, December 15, 2021
FTIR Observation On Sapphires Treated With Heat And Pressure
Fourier transform infrared (FTIR) spectroscopy is considered a useful tool in revealing heat treatment of corundum. The report by GIA researchers is a must read for gemologists, heat treatment specialists, gem dealers, and consumers.
Fura Gems’ Inaugural Ruby Sale
The addition of Fura as a Mozambican rough ruby supplier, along with Gemfields and the artisanal mining community makes for an exciting change in the colored stone gem market.
Tuesday, December 14, 2021
Honey Brown And Light Yellow Hydrogrossular: An Uncommon Jade Imitation
One of the materials commonly used to imitate jade is fine-grained aggregate hydrogrossular garnet, not single crystal garnet. Consumers beware.
Monday, December 13, 2021
Pink Aventurine Quartz with Alurgite Inclusions
Since strawberry quartz is not a strictly defined marketing name, consumers should notice that there are actually different types of quartz with various inclusions sold with same trade name. Consumers beware.
Useful link: https://www.gia.edu/gems-gemology/fall-2021-gemnews-pink-aventurine-quartz-algurite-inclusions
First Identification Of Sudoite In Caribbean Ceramic-Age Lapidary Craftsmanship
Sudoite is one of the green rocks used in Amerindian lapidary craftsmanship in the Lesser Antilles, possibly originating from the Greater Antilles, or Central or South America. The insightful report by the GIA researchers is a must read.
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