2019 年 GIA 鉴定所接收的最有趣独特的宝石。

关于斯里兰卡有色宝石的注释文献清单

世界两大钻石生产商表示，钻石原石销售经过几个月的严重下滑后，目前市场开始企稳。

加州卡爾斯巴德 – 2019 年 11 月 18 日 – 結合寶石的科學和美麗，《寶石與寶石學》(Gems & Gemology) 2019 年秋季季刊充滿了耀眼的圖像和詳細研究。

加利福尼亚州卡尔斯巴德 — 2019 年 11 月 18 日 –《宝石与宝石学》(Gems & Gemology) 2019 年秋季刊将宝石的科学和美丽相结合，充满了耀眼的图像和详细的研究。

世界两大钻石生产商表示，钻石原石销售经过几个月的严重下滑后，目前市场开始企稳。

在亚利桑那州壮丽的沙漠和高山风光下，来一场寻找宝石和矿物宝藏的现代狂野西部自驾游再适合不过了。

An intriguing item was sent by KC Bell to GIA’s Carlsbad laboratory for examination.

A remarkable inclusion scene in diamond is showcased by an unconventional cutting style.

The New York lab recently identified a sapphire entirely covered with a cobalt coating to enhance its blue color.

The Hong Kong laboratory recently examined a 14.36 ct pink-orange cushion mixed-cut specimen.

The Tokyo lab received two unusually large laboratory-grown star corundum for examination.

Resin materials marketed as imitation ivory were recently acquired by a GIA gemologist.

At the GIA Carlsbad laboratory, the authors recently examined a cabochon of “bloodshot” iolite (containing red, eye-visible platelets of hematite) intergrown with a sunstone.

Quartz crystals with three-phase fluid inclusions from the Jinkouhe mine in the Sichuan Province of China have been sold for many years at gem and mineral shows such as those held annually in Tucson, Arizona.

Nigerian aquamarine with exceptionally deep and saturated color also displays unusually strong pleochroism.

An edible oyster from the Hab River Delta of Pakistan reveals a natural pearl.

The DANAT laboratory recently encountered two natural black color beads cut from an unknown mollusk.

Minute platy magnetite inclusions in these emeralds from Pakistan could help advance our understanding of trapiche.

The 2019 AGTA show in Tucson featured the work of a gemstone portrait artist.