Books

The World Of Color

Chelsea & Synthetic Emerald Filters –Guide to Using Gem Identification Tools

Loupes Made Easy – Guide to Using Gem Identification Tools

Refractometers Made Easy – Guide to Using Gem Identification Tools

Ultraviolet Lamps Made Easy – Guide to Using Gem Identification Tools

Dichroscopes Made Easy – Guide to Using Gem Identification Tools

Diamond-Type Spotter & Blue Diamond Tester Made Easy – Guide to Using Gem Identification Tools