开拓中国宝石和珠宝行业 (英语)
Examines China’s eminent role in the gem and jewelry industry, as a manufacturer and a consumer market, and its impact on the global trade.
Beryllium in Blue Sapphires, Both Natural and Diffusion-Treated
Overview and commentary on the 2013 InColor article “Blue Sapphires and Beryllium: ‘An Unfinished World Quest.’”
Polymer-Impregnated Aventurine Quartz, a New Imitation of “Ice Jade”
A bangle, thought to be jadeite jade, is revealed by laboratory testing to be polymer-impregnated aventurine quartz.
一窥俄罗斯钻石贸易 (英语)
Overview and commentary on the 2013 Russian Diamonds and Jewellery article “New Reality of the Russian Jewellery Market.”
Indian Ruby Mining
An overview of ruby mining in the southern Indian states of Tamil Nadu and Karnataka.
Large Oolitic Opal Block
The natural-color oolitic opal is the largest of its type examined by GIA.
Tenebrescent Irradiated Scapolite
The effect of irradiation on scapolite with tenebrescence, a color-change phenomenon that occurs after exposure to UV light.
Fine Australian Chrysoprase Rough and Carvings – Tucson 2014
A report on Australian chrysoprase from the 2014 gem shows in Tucson, Arizona.
Stone and Fossil Photography – Tucson 2014
Yellow Sapphire Filled with Lead Glass
What Possesses Bidders at Auction? This Article Offers Some Clues
Fancy Black NPD Synthetic Diamond
UV-Reactive Opal
The first documented UV-reactive chemical treatment to make opal appear tenebrescent.
Distinguishing Between Natural and Synthetic Green Chrysoberyl
Gem Crystals – Tucson 2014
Mexican Opal – Tucson 2014
Fire opal production at a family-owned mine in Mexico is explored at the 2014 GJX show in Tucson.
.jpg "YMAL GIA Ed")
