


碳化硼:一种新的黑色钻石仿品
Specimen sold as black diamond identified as ceramic material commonly used in hard-plating applications


Mila (米拉)加快推进 Gemfields公司的祖母绿事业
GIA(美国宝石研究院)资深行业分析师 Russell Shor (罗素·肖尔)向大型宝石矿上市公司Gemfields 首席执行官 Ian Harebottle(伊恩·蛤雷波特尔)谈到公司致力于利用广告和推广活动来促使整个行业的华丽提升。

Integrating G&G with GIA’s Gemology Education
This is the editorial article for the Summer 2013 issue of Gems & Gemology
Optimizing Face-Up Appearance in Colored Gemstone Faceting
How contrast patterns can increase perceived brightness and optimize a gemstone's appearance.
钻石的光学缺陷:快速参考表 (英语)
A simple chart on optical defects in diamond, including those that produce coloration and fluorescence colors.

Fluorescence Produced by Optical Defects in Diamond
How variations in UV lamp output can affect observed fluorescence color and intensity.
Nephrite Jade from Val Malenco, Italy: Review and Update
Analysis of 21 rough and gem-quality samples offers an update on the composition and properties of this pale green gem from the Italian Alps.
Orangy Pink Coated "Soft Coral"
黄色“好望角”彩钻中发现鱼状内含物 (英语)
A recent lab examination at GIA New York revealed an inclusion in a rectangular Fancy Yellow called "pareidolia," which means it was a resemblance of the scales and form of a fish.
Rare Faceted Neptunite
Raman spectroscopy reveals orangy red neptunite in identification of a 11.78 ct faceted “black” octagonal modified step-cut stone.
博茨瓦纳:选矿工作
在博茨瓦纳,约有近 3000 名工人从事出口钻石的切割和磨光工作 — 去年,该行业产生了近 8 亿美元收益,并可能在 2015 年突破 10 亿美元大关。 并非所有磨光业务都可以盈利,但不少是盈利的,其他的也取得了很大进步。


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