Australian Opal Beads with Blue Play-of-Color
Boulder opal in sandstone matrix is seen as beads in Tucson.
Iridescent Spondylus Pearl
Iridescence is seen in a porcelaneous pearl examined at the Carlsbad laboratory.

Garnet Inclusion Illusion
A quartz double cabochon showcases a garnet placed to imitate an inclusion.
《宝石与宝石学》(Gems & Gemology) 2016 年夏季刊:产自 Diavik(戴维克)的钻石,负责任的采购和法贝热哥萨克人像
内容摘要详见《宝石与宝石学》(Gems & Gemology) 2016 年夏季刊。
Robotic Colored Stone Cutting Machines
Master cutter Kiwon Jang demonstrates his newest cutting machine at Tucson’s AGTA show.
HPHT 钻石和 CVD 钻石的生长过程:制造实验室制造钻石
尽管越来越多的人开始了解实验室制造钻石,但仍有许多人不知道这种钻石到底是如何制造的。了解两种钻石生长过程 — 高压高温 (HPHT) 和化学蒸气沉淀法 (CVD)。
书评:《Minerals of Georgia: Their Properties and Occurrences》(乔治亚州的矿物:性质和分布地)
《Minerals of Georgia: Their Properties and Occurrences》(乔治亚州的矿物:性质和分布地)书评,第二版,作者:Robert B. Cook(罗伯特·B·库克)和 Julian C. Gray(朱利安·C·格雷)。
