新闻稿搜索结果

Examination of a 0.40 ct near-colorless round brilliant diamond with a large inclusion resembling a dumbbell

Northern Vietnam began producing significant quantities of rubies and fancy sapphires in the late 1980s.

A new opal deposit was discovered in 2008 near the village of Wegel Tena, in volcanic rocks of Ethiopia’s Wollo Province.

Gem-quality rubies and pink to purple sapphires are being recovered from the Luc Yen and Quy Chau mining regions of Vietnam.

全球经济动荡已开始波及超级富豪 — 2015 年 BASELWORLD （巴塞尔国际钟表展）上顶级宝石、钻石和设计师珠宝产品的最大需求群体 。

维姆‧维特瑞斯特谈论实地宝石学的最新发展：马达加斯加北部的蓝宝石及翠榴石

此阅读清单让您有机会了解更多有关克什米尔蓝色蓝宝石的历史。