“Floating Flower” Inclusions in Aventurine Quartz Bangle

Lab analysis proves that a bangle with “floating flower” inclusions believed to be jadeite jade or albite is actually highly translucent aventurine quartz.

阅读更多

Historic Sales of Pink and Blue Diamonds from the Argyle Mine

Rio Tinto sells its final collections of pink and blue Argyle diamonds at record-breaking prices.

阅读更多

Update on Mining Activity at Yogo Gulch, Montana

Renewed mining interest in Montana promises a return of the famous Yogo sapphire to the gem trade in the coming years.

阅读更多

Unusual Composite Apatite-CO2 Inclusions in Sapphires from Ohn Bin Yee Htwet, Myanmar

The discovery of apatite and CO2 in a single inclusion in sapphire is reported for the first time by the Carlsbad laboratory.

阅读更多

Natural Black Coral with Polyp Structure

Examination of a large black oval cabochon reveals an intense orangy brown and black polyp structure, indicating natural black coral.

阅读更多

Quarterly Crystal: Rutile on Hematite

An unusual hematite crystal from Pakistan hosts a geometric outer skin of sagenitic rutile.

阅读更多

Windmill Zoning in Tourmaline

Pink faceted tourmaline reveals unique colorless windmill-shaped zoning.

阅读更多

Unique Circuit Board–Like Surface Pattern on Tourmaline

Microscopic observation by the Tokyo lab revealed a mysterious networked pattern, resembling that of a circuit board, covering the overall surface of a blue-green tourmaline.

阅读更多

Exceptionally Large and Well-Saturated Orange Sapphire

A notable 31.06 ct well-saturated orange sapphire was recently submitted to the Carlsbad laboratory.

阅读更多

Flux-Induced Fingerprints in Flame-Fusion Synthetic Sapphire

The Carlsbad laboratory received a lab-grown sapphire featuring a flux fingerprint similar to those found in natural sapphire.

阅读更多

Novelty Cut Diamond Faceted as Iconic Apple Logo

A novelty cut Fancy yellow diamond submitted to the Carlsbad laboratory bears a striking resemblance to the iconic Apple Inc. logo.

阅读更多

Pink Euclase

The Tokyo lab recently observed its first example of euclase with an orangy pink color, possibly caused by manganese.

阅读更多

Winter 2021 G&G Publication Information

This document provides the publication information for Gems & Gemology

阅读更多

上一页第 2 页,共 2 页下一页

您或许还会喜欢

YMAL GIA Ed
了解校园课程和在线教育
Learn About NextGem
GIA NextGem™ 钻石零售 培训
Explore GIA Laboratory Promotional Offers
探索 GIA 鉴定所的促销优惠
Shop the GIA Store
访问 GIA 商店