The interior structures of pearls are always of interest, as they are never revealed until the analysis begins.

Topaz is an important gemstone that occurs in various colors.

Examines the basic characteristics of kimberlites and their relationship with diamonds.

Two pearls presented a unique challenge, as testing at three different gemological laboratories could not conclusively identify them as natural or cultured, determine a freshwater or saltwater growth environment, or specify the producing mollusk.

Although opals generally contain water in their structure, fluid inclusions large enough to be resolved with the microscope are rare; those that can be seen with the unaided eye are exceedingly rare.

The appearance of curved banding under short-wave UV easily identifies flame-fusion synthetic sapphire.

Provides a visual guide to the internal features of natural, treated, synthetic, and imitation opal.

Twelve pink sapphires undergo low-temperature heat treatment and reveal a correlation with the 3232 cm-1 FTIR peak.

Reviews the mining history, market impact, and properties of ruby from northern Mozambique near Montepuez, now the world’s most productive source.

Shows how the color of Madagascar sapphire is lightened with heating to relatively low temperatures below 1350°C.

Alan Nacht（艾伦·纳希特）继承了家族遗产——Bernard Nacht & Co.，不断寻找令人难忘的珠宝。

让这些在海中形成的珠宝带您进入梦想中的暖水海洋天堂，感受海洋的气息。

周大福和 GIA 提供安全的数字区块链证书，将钻石的历程和鉴定信息记录在同一个地方。

荷兰银行表示将不再为无法盈利的原石提供采购资金后，戴比尔斯和阿罗沙的钻石原石销量大幅下降。

GIA 珠宝鉴证学研讨会教授学生成为珠宝侦探，评估珠宝设计和工程质量。

佳士得的拍卖会上展出了阿勒萨尼珍藏系列珠宝，吸引了来自世界各地的收藏家。

“好莱坞珠宝”由 Kazanjian Foundation（卡赞金基金会）贷款资助，将展示一些与好莱坞明星相关的珠宝和配饰。

2019 年春季拍卖会上，有历史渊源的宝石和珠宝拍出了最高价格。

消费者想知道其珠宝的各组件——宝石、钻石和贵重金属是否源自责任采购。

成品珠宝需求强劲，但裸石需求降低。另附：实验室制造钻石和负责任、可持续的商业实践。