Russian Flux-Grown Synthetic Alexandrite
G. Robert Crowningshield: A Legendary Gemologist

Recrystallization of Baddeleyite as an Indicator of PHT (“HPHT”) Treatment in Sapphire
High baddeleyite content in heated sapphire may signal PHT (“HPHT”) treatment.

Green Opal Displaying Aventurescence
Pyrite inclusions in a green common opal produce a pleasing aventurescence.
Une Découverte Exceptionnelle de Béryls Gemmes à Chaves, District de Vila Real, Portugal [在葡萄牙雷阿尔区查维斯惊喜发现宝石级的绿柱石]
葡萄牙北部拥有大量伟晶岩,对于矿物收藏家而言,是一个非常著名的精美矿物标本产地。
Canadian Mining Industry: Taking a Step Up with Range of Operations
Dr. John W. Valley Retires from GIA Board of Governors
自2014年起担任GIA理事会成员的约翰‧W‧威利(John W. Valley)博士,在11月初于加州卡尔斯巴德举行的年度例会后正式退任。
深入探寻 2013 年图森展
Reply to: Evidence for two blue (type IIb) diamond populations
Smith E.M., Shirey S.B., Richardson S.H., Nestola F., Bullock E.S., Wang J.H., Wang W. (2019) Reply to: Evidence for two blue (type IIb) diamond populations. Nature, Vol. 570, pp. E28-E29.
Russian Synthetic Pink Quartz


First Observation of H4 Defect in CVD Synthetic Diamond

书评:《The Guy Ladrière Collection of Gems and Rings》(Guy Ladrière(居伊·拉德里埃)的宝石和戒指收藏)
《The Guy Ladrière Collection of Gems and Rings》(Guy Ladrière(居伊·拉德里埃)的宝石和戒指收藏)书评, 由 Diana Scarisbrick(戴安娜·斯佳瑞斯布瑞克)、Claudia Wagner(克劳迪娅·瓦格纳)和 John Boardman(约翰·博德曼)撰写。
Mildly Radioactive Rhinestones and Synthetic Spinel-And-Glass Triplets
Low levels of radioactivity were found in some greenish yellow to yellow-green (peridot-like) synthetic spinel-and-glass triplets, mirror-backed glass rhinestone chatons, and fully fashioned glass rhinestones.

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