Shell Pearl as a Pearl Imitation
Examination of commercially-available “shell pearls” reveals imitation material.
Challenges and Opportunities
An overview of the Summer 2014 issue of Gems & Gemology, plus thoughts on the journal's future.
Experimental Studies on the Heat Treatment of Baltic Amber
Amber samples were heat-treated, using various procedures and parameters, in an effort to reproduce materials found in the jewelry market.
Color Phenomena of Blue Amber
Investigates the presence of fluorescence, rather than iridescence, as the cause of color in blue amber from the Dominican Republic and Indonesia.
祖母绿的三相式内含物及其对原产地鉴定的影响 (英语)
Discusses the role of three-phase inclusions in emerald, in combination with spectroscopy and trace-element analysis, in determining geographic origin.
博茨瓦纳的闪烁瞬间 (英语)
Examines the history of diamond production in Botswana and the long-term outlook for beneficiation through value-added industries.
Unusual Optical Effect in Blue Sapphire | Gems & Gemology
A bluish violet sapphire shows surprising effects under lab examination.
Jadeite Bangle with the Appearance of Polymer Treatment
A jadeite jade bangle is submitted for lab testing to investigate the possibility of treatment.
图书：《戒指 — 象征权力、爱情和忠诚的珠宝》(Rings – Jewelry of Power, Love and Loyalty) (英语)
Review of Diana Scarisbrick’s Rings: Jewelry of Power, Love and Loyalty.
Books: In Praise of Hands: The Art of Fine Jewelry at Van Cleef & Arpels
Review of Franco Cologni’s In Praise of Hands: The Art of Fine Jewelry at Van Cleef & Arpels.
Record-Size Natural Moissanite Crystals Discovered in Israel
Natural moissanite crystals found in Israel have broken world records, with evidence of larger crystals in the area.
图书：《纽约州矿产收藏家指南》(The Collector's Guide to the Minerals of New York State) (英语)
Review of The Collector's Guide to the Minerals of New York State.
Tenebrescent Zircon
Color modification is observed in a reddish orange zircon at the Bangkok laboratory.
天然钻石上 CVD 合成膜的长期坚固性 (英语)
A natural diamond with a CVD synthetic film is examined at GIA's Carlsbad lab.
黄色化学蒸气沉淀法合成钻石 (英语)
A Fancy yellow type Ib CVD-grown synthetic diamond undergoes testing at the New York lab.
Rare Faceted Wurtzite
A stone submitted for identification is revealed to be the first wurtzite examined by the GIA lab.
Bumble Bee “Jasper” from Indonesia
Bumble Bee jasper, first discovered on Java, exhibited at the Tucson Gem and Mineral Show.
Using Conventional Equipment to Separate Natural from Synthetic Ametrine
A summary of the article “A simple approach to separate natural from synthetic ametrine,” by Francine Payette.
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