Asterism (gemology)
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- Harshil Jewellers
- Fall 1999 Gems & Gemology
- HEAT TREATING RUBY and SAPPHIRE: TECHNICAL ASPECTS by Kurt Nassau
- Star Quartz Asterism Caused by Sillimanite
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- What Is Corundum and What Are Its Basic Qualities?: EOSC 118 99C Earth's Treasures: Gold and Gems What Is Corundum and What Are Its Basic Quali Es?
- Moonstone – the June Birthstone
- Gemmology2013 / Volume 33 / Nos
- The Secret Lives of Minerals
- Synthetic Alexandrites Grown by the HOC Method in Russia: Internal Features Related to the Growth Technique and Colorimetric Investigation
- BLUE QUARTZ in VIRGINIA Michael A