Related Articles
ten gemstones rarer than diamond - paraiba ring
Ten Gemstones Rarer than Diamond

From the seemingly common to the utterly obscure, you wouldn't guess these ten gemstones are rarer than a diamond! If you're looking for something unique for your next jewelry purchase, check out these ten stunning gemstones rarer than diamond.

gemstone pleochroism - andalusite jewelry
What is Gemstone Pleochroism?

Some gems show pleochroism, two or three different colors depending on the viewing angle. Learn why this occurs and how it helps gemologists identify gems.

denver gem show - gems on display
Denver Gem & Mineral Showcase 2017

With over 900 vendors and numerous geologic rarities, the 2017 Denver Gem & Mineral Showcase had plenty to see. Read about some highlights in our report!

tanzanite - gold Celtic ring
Tanzanite (Zoisite) Value, Price, and Jewelry Information

Everything you ever wanted to know about tanzanite. Find value guidelines, scientific data, expert comments, and more in our Gemstone Listings.

tanzanite buying - ring with 18k gold and diamonds
Tanzanite Buying Guide

More than just a simulant for sapphire, tanzanite’s vivid hues have stunned the gem world. Our tanzanite buying guide can help you find a gem you'll love!

A Beginner’s Guide To Common Gemstone Heat Treatments

Gemstone heat treatments can increase the beauty and value of many rough pieces. Learn how to conduct the most common procedures safely.

Why Choose a Barion Cut?

Gem faceters must consider factors like brilliance, color, and faceting yield before choosing a cut style. Learn what a Barion cut can bring to a gemstone.

Faceting Design Diagram: Purple Cross – Tanzanite – Zoisite, Thulite

Successful tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Purple Cross".

Faceting Design Diagram: 2-Star Square – Tanzanite – Zoisite, Thulite

Details and information on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts this one is called "2-Star Square"