A Zircon with Strong Photochromic Effect
Photochromic zircon shows significant color change from medium light greenish blue to very dark yellowish green.
“Boomerang” Inclusion in a Rough Topaz
A unique twinned crystal inclusion resembles a boomerang in a rough topaz.
Three-Rayed Asterism in Quartz
Rare optical phenomenon observed in four star quartz cabochons from Brazil.
Summer 2022 G&G Publication Information
This document provides the publication information for Gems & Gemology
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