Rare material seen at the GJX show in February 2015.

A uniquely carved tourmaline suite on display in Tucson.

A purple non-nacreous specimen is revealed to be a natural northern quahog pearl.

An introduction to Moroccan amethyst, which features distinctive color zoning and inclusions.

An up-close look at the cultured pearl’s role in the gem and jewelry industry.

A translucent Brazilian emerald exhibiting pronounced chatoyancy is examined.

Exceptional stones are recirculated and new production is showcased at the AGTA show in Tucson.

Examination of the largest HPHT synthetic diamonds GIA has examined so far demonstrated significant progress in this growth technology.

Explores the geology, production, and yield of the world’s most commercially important ruby deposit.

A summary of the findings at Tucson’s 2015 gem shows.

采用内含物分析法、傅里叶变换红外光谱和激光剥蚀电感耦合等离子体质谱仪 (LA-ICP-MS) 观察接受低温加热后的莫桑比克红宝石变化的报告。

2015 年迄今为止业界继续保持谨慎态度。 珠宝零售数据、戴比尔斯看货会和苏富比及佳士得拍卖销售讲述了详细情况。