Metal Jewelers Loupe 30X LED Illuminated FREE w any purchase of gems or jewelry - Simply Sapphires

Minerals, Free Full-Text

What are some ways to tell if a crystal pendant is real? - Quora

Real vs Fake Diamonds: How to Tell if a Diamond is Real

Journal of weekly news and commentaries about rocks and minerals and mineral collecting - John Betts' Mineral Blog

The Project Gutenberg eBook of The Curious Lore of Precious Stones, by George Frederick Kunz.

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How Do Diamond Testers Work? - Estate Diamond Jewelry