在 GIA 鉴定所鉴别出的近无色的米粒尺寸高压高温 (HPHT) 合成钻石 (英语)
The Bangkok lab examines near-colorless HPHT synthetic diamonds in melee sizes.
Unusual Combination of Inclusions in Synthetic Star Sapphire
A hexagonal boundary, usually found in natural material, is observed in a synthetic star sapphire.
Dual-Color Double Stars in Ruby, Sapphire, and Quartz: Cause and Historical Account
Examines a form of asterism comprising two six-rayed stars, one white and one that exhibits the stone’s bodycolor. Firsthand accounts and a survey of patent documents reveal that diffusion has been used to create or enhance this optical phenomenon in synthetic and possibly natural corundum since the 1950s.
Chemical Analysis of Zircon
Trace-element analysis is used to identify metamictization, treatment, and growth conditions of zircon.
Maine Pegmatite Workshop
A report summarizing the expeditions and lectures at the June 2015 pegmatite workshop in Poland, Maine.
Large Cat’s-Eye Emerald from Brazil
A translucent Brazilian emerald exhibiting pronounced chatoyancy is examined.
Digital Photomicrography for Gemologists
A guide to capturing gem inclusion scenes using practical equipment and techniques and the appropriate image-refining software.
世界宝石产地浪漫之旅:阿富汗
美しい宝石の採掘やカットが行われている、パキスタンの鉱山での本物の宝石採掘を、GIAフィールド宝石学者と共に冒険してください。 ヒマラヤ、カラコルム、ヒンドゥークシュ山脈がぶつかり合う、マルコ・ポーロの通った古いシルクロードの旅に、私たちと共に出かけます。
刚玉附生合成红宝石的分析
采用内含物分析、紫外线 — 可见光 — 近红外分光光度法、能量色散 X 射线荧光光谱仪和激光剥蚀电感耦合等离子体质谱仪,对刚玉附生合成红宝石进行分析。
Exhibition Review: Maker & Muse, Women of the 20th Century Art Jewelry
A review of the “Maker & Muse, Women of the 20th Century Art Jewelry” exhibition at Chicago’s Driehaus Museum.
世界宝石产地浪漫之旅:斯里兰卡
跟随 GIA 实地宝石学家的脚步,前往斯里兰卡“珠宝之岛”,开启一段真正的宝石开采冒险之旅。您会看到这里如今仍在使用传统的宝石开采技术。 斯里兰卡是一个开采、切磨与交易强国。
《宝石与宝石学》(G&G) 2015 年春季刊介绍蓝色尖晶石、中国珠宝设计和最新的合成品
《宝石与宝石学》(G&G) 简报介绍了《宝石与宝石学》(Gems & Gemology) 2015 年春季刊的内容概要。
GIA 鉴定所关于天然尖晶石钴扩散处理新方法的报告
关于天然尖晶石钴扩散处理新方法的报告,采用了内含物分析、紫外 - 可见光 - 近红外 (UV-Vis-NIR) 和能量色散 X 射线荧光 (EDXRF) 光谱仪,还有激光剥蚀电感耦合等离子体质谱仪 ( LA-ICP-MS) 等方法。
戴比尔斯降低原石价格 - 降幅太低?
戴比尔斯在五月看货会上降低了原石价格;经过临时处理但未经披露的钻石提交给 GIA;Sotheby's(苏富比)、Christie's(佳士得)的销售再次打破拍卖纪录。

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