History. Sources. Identification. Appraisal. Treatments. A must-have book for all collectors, dealers, gemologists, appraisers, curators and anyone else with an interest in jade.
P.J.Joseph's Weblog On Colored Stones, Diamonds, Gem Identification, Synthetics, Treatments, Imitations, Pearls, Organic Gems, Gem And Jewelry Enterprises, Gem Markets, Watches, Gem History, Books, Comics, Cryptocurrency, Designs, Films, Flowers, Wine, Tea, Coffee, Chocolate, Graphic Novels, New Business Models, Technology, Artificial Intelligence, Robotics, Energy, Education, Environment, Music, Art, Commodities, Travel, Photography, Antiques, Random Thoughts, and Things He Like.
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Sunday, September 05, 2021
Sunday, April 11, 2021
Oiled Tanzanite
Any gems with surface-reaching fissures can be oiled. The purpose is to improve clarity. Consumers and gem dealers beware.
Sunday, September 20, 2020
FTIR In Gem Testing
For practising gemologists only. Many thanks to Richard Hughes and Wimon Manorotkul for sharing an insightful article. Analytical instruments require a skilled operator to extract its full potential. Lifelong learning is a must-have skill in applied gemology.
Thursday, September 05, 2019
Tuesday, February 19, 2019
Colored Stone Grading
Useful link:
http://lotusgemology.com/index.php/library/articles/343-colored-stone-grading-a-heretic-s-guide
Thursday, November 23, 2017
Saturday, June 24, 2017
A History Of Chanthaburi
Useful link:
http://www.lotusgemology.com/index.php/library/articles/276-moontown-a-history-of-chanthaburi-thailand-and-pailin-cambodia
Saturday, June 03, 2017
Ownership Of Words
Useful link:
http://lotusgemology.com/index.php/library/articles/132-ownership-of-words-an-essay-on-padparadscha-sapphire
Friday, November 25, 2016
Tuesday, January 12, 2016
New Rubies From Madagascar
Useful link:
http://lotusgemology.com/index.php/library/articles/322-blood-red-rubies-from-madagascar-lotus-gemology
Wednesday, April 29, 2015
Friday, January 16, 2015
Mogok Geology Primer
Useful link:
http://lotusgemology.com/index.php/library/articles/159-rock-talk-a-mogok-geology-primer