SSEF Diamond-Type Spotter and Blue Diamond Tester Made Easy: The "RIGHT-WAY" Guide to Using Gem Identification Tools (The Antoinette Matlins "RIGHT-WAY" Series to Using Gem Identification Tools) Paperback – June 17, 2014

SSEF Diamond-Type Spotter and Blue Diamond Tester Made Easy: The "RIGHT-WAY" Guide to Using Gem Identification Tools (The Antoinette Matlins "RIGHT-WAY" Series to Using Gem Identification Tools)

Refractometers Made Easy: The "RIGHT-WAY" Guide to Using Gem Identification Tools (The Antoinette Matlins "RIGHT-WAY" Series to Using Gem Identification Tools)