Diamond Size Chart, Carat Size Chart On Scale
Gemone Diamond Diamond Size Chart for Round, Square, Cushion, Heart, Oval, Marquise and Princess Cut Diamonds. Check Our Carat Versus mm Size.
"Gemstones and Their Meanings" Flyer
Our popular gem info card is printed on the front and back, and includes photos and meanings for 40 different stones. Professionally printed on premium glossy 14pt stock. Dimensions: 8.5" x 5.5"
10 Steps to Help You Identify Any Mineral
Learning the basics of mineral identification is easy. All you need are a few simple tools and your own powers of careful observation.
ROCK IDENTIFICATION KEYS Mineral Identification Links that we used to identify minerals: The Rock Key Table of Contents and Information- Rock Key: A Dichotomous Key- ROCK ID- Follow the arrows and …
All About Gemstones - GIA
Established in 1931, GIA is an independent nonprofit that protects the gem and jewelry buying public through research, education and laboratory services.