

Ulrika F.S. D’Haenens- Johansson
Ulrika F.S. D’Haenens-Johansson(乌尔丽卡·F.S.·德哈恩斯-约翰森)运用光学和 EPR 光谱仪研究天然钻石、经处理钻石和实验室培育钻石材料的缺陷物理性质
-Soonthorntantikul.jpg-636.jpg)


Visions in Crystal(水晶幻想)
“Visions in Crystal(水晶幻想)”高逾 6 英尺(210 厘米),由 264 块水晶石英、黄水晶和烟水晶组成,每块水晶均切磨成不同的带棱角刻面。

Tourmaline Carvings
In 1972, an immense pocket of superb tourmaline was uncovered in Maine, Dunton Quarry Mine, Newry Hill, USA. These high-quality crystals ranged in color from beautiful greens and rich pinks to piercing blues. From this material, master gem carver Gerhard Becker of Idar-Oberstein, Germany, created a series of miniature carvings of birds, mammals, and fish native to North America. This series of pieces is a gift of John Staver.
GIA 区块链钻石鉴定证书
GIA 目前正使用区块链技术提供安全的数字钻石鉴定证书。此项证书服务提供同样独立、准确且公正的鉴定分析,如数字格式的 GIA 钻石鉴定证书和钻石鉴定精简版证书 (Diamond Dossier®)。



.jpg)


