
Exceptionally Large and Well-Saturated Orange Sapphire
A notable 31.06 ct well-saturated orange sapphire was recently submitted to the Carlsbad laboratory.

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.

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.

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

Epoxy-Filled Chalcedony as an Imitation for “Candy Agate”
Popular “candy agate” beads are identified as epoxy-filled chalcedony at the Taiwan Union Lab of Gem Research.
“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.
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.

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.

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.

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.

Quarterly Crystal: Rutile on Hematite
An unusual hematite crystal from Pakistan hosts a geometric outer skin of sagenitic rutile.

Windmill Zoning in Tourmaline
Pink faceted tourmaline reveals unique colorless windmill-shaped zoning.
Winter 2021 G&G Publication Information
This document provides the publication information for Gems & Gemology