Plastic and plastic manufactured products are common imitations for emerald. Many thanks to gemologists at GIA New York for the interesting report.
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.
Translate
Thursday, August 24, 2023
Sunday, September 04, 2022
Blue Rough Gemstones
A fine example of simulants and synthetics imitating natural gemstones. Buyer beware.
Monday, July 26, 2021
Phenakite As A Diamond Imitation
Cut stones are quite rare and well known only to collectors of rare gemstones. Cut phenakite can resemble low quality cut diamonds. Consumers beware.
Monday, April 19, 2021
Artificial Glass Imitating A Paraíba Tourmaline
Artificial glass is the cheapest and best imitation for any popular colored stones. Standard tests should easily identify man-made glass from tourmaline. Consumers beware.
Sunday, April 11, 2021
Spectral Analysis Of Resin Imitation Ivory
Without FTIR, Raman spectroscopy, and reference samples, separating ivory from resins would be difficult.
Tuesday, February 02, 2021
Synthetic Moissanite With Fraudulent GIA Inscription
Buyer beware. If doubtful, always consult a reputed gem testing laboratory like the GIA.
Friday, January 01, 2021
Marble Imitation Of Jadeite Rough
Thursday, July 30, 2020
Clarity-Enhanced Glass Imitating Emerald
Useful link:
https://www.gia.edu/gems-gemology/spring-2020-labnotes-glass-imitating-emerald
Wednesday, December 04, 2019
Wednesday, July 24, 2019
Lab Finds Synthetic Sapphires Posing As Diamonds
Useful link:
https://www.diamonds.net/News/NewsItem.aspx?ArticleID=63757&ArticleTitle=Lab%2bFinds%2bSynthetic%2bSapphires%2bPosing%2bas%2bDiamonds
Tuesday, May 28, 2019
Wednesday, September 19, 2018
Tuesday, June 12, 2018
New Plastic Imitation Opal From Kyocera
Useful link:
https://www.gia.edu/gems-gemology/spring-2018-labnotes-new-plastic-imitation-opal-from-kyocera
Sunday, January 14, 2018
Monday, July 24, 2017
Saturday, April 02, 2016
Tuesday, March 08, 2016
Diamonds In The Rough
Useful link:
http://www.dailymail.co.uk/money/markets/article-3369288/Diamonds-rough-Beers-spotting-fakes-flawless-synthetic-gems-attractive.html