GIA 升级 iD100® 宝石测试设备，用以筛选粉红色钻石
加利福尼亚州卡尔斯巴德 - 2019 年 9 月 5 日 – GIA 于 9 月 4 日发布了业界领先的升级版 GIA iD100® 宝石检测设备，该仪器能够将天然粉红色钻石与实验室制造 (HPHT 和 CVD) 钻石及钻石仿品区分开来。
A Decade of Ruby from Mozambique: A Review (英语)
Reviews the mining history, market impact, and properties of ruby from northern Mozambique near Montepuez, now the world’s most productive source.
Purple Fluorite Inclusion in Emerald from Russia
Fluorite inclusions in emeralds from various localities have been reported extensively in the literature.
Tagua Nut as a Sustainable Botanical Alternative for Ivory
Jewelry designer Alexandra Mor uses sustainable alternatives for elephant ivory.
Black Nephrite Jade from Guangxi, Southern China
Characterizes black nephrite from a deposit in the Guangxi region that appears to be part of a large-scale jade formation belt in southern China.
Kimberlites: Earth’s Diamond Delivery System
Examines the basic characteristics of kimberlites and their relationship with diamonds.
Evidence of Rotation in Flame-Structure Pearls from Bivalves of the Tridacnidae Family
A study of these pearls to characterize their distinctive flame structure and examine the possibility of rotation during their formation or growth.
A “Hollow” Pearl Filled with Foreign Materials
Conclusively identifying the origin of a “hollow” pearl filled with foreign materials proves challenging.
Madagascar Sapphire: Low-Temperature Heat Treatment Experiments
Shows how the color of Madagascar sapphire is lightened with heating to relatively low temperatures below 1350°C.
A Special Type of Trapiche Quartz
Three incomplete trapiche quartz make up this interesting sample.
Rough Diamond Crystal with an Unusual Coating of Fake Green “Radiation Stains”
The interior structures of pearls are always of interest, as they are never revealed until the analysis begins.