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。
马达加斯加 Ilakaka(伊拉卡卡)和 Sakaraha(萨卡哈) 蓝宝石开采的情况更新
拍卖行:主要钻石和有色宝石的强大市场影响 (英语)
A report on how high-profile jewelry auctions have affected the gem and jewelry market.

巴西珠宝产业的崛起
从安第斯山脉(Andes )到潘塔纳尔(Pantanál):寻找紫黄晶
Enriching a Tradition
Infrared Spectroscopic Study of Filled Moonstone
A study on how infrared spectroscopy provides conclusive evidence of impregnated moonstone.
Large HPHT-Treated Fancy Pink Diamond
The New York lab encountered another large HPHT-treated diamond that showed stronger pink coloration.
提交至孟买鉴定所的三颗 CVD 合成钻石 (英语)
The gemological and spectroscopic characteristics of these type IIa synthetic diamonds suggested that they experienced different growth and/or treatment histories.
巨大的 CVD 制造合成钻石 (英语)
The New York laboratory recently tested a 2.16 ct CVD synthetic from Scio Diamond Technology Corp., the largest specimen GIA has seen so far.
含聚合氮杂质的 CVD 合成钻石 (英语)
Recently, an unusual 0.94 ct Fancy yellow-brown emerald cut was submitted to GIA for a synthetic diamond grading report. It contained a cloud of black needle-like inclusions occurring along a plane and showed weak green transmission with fiber-optic illumination.

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