Articles

Color Grading Tanzanite Explained

A gemologist's breakdown of tanzanite by hue, tone, and saturation—discover the secrets behind the GIA color grading process for tanzanite 

GIA “Tanzanite Reports” – Do You Need One ? And How To Read One

Thinking about GIA certification for your tanzanite? Here’s what you can (and can’t) expect from a GIA Tanzanite Report.

Tanzanite Color Grades: Understanding “VB 6/6”

Fine-colored tanzanite graded as vB 6/6 comprises less than 1% of all production—but what does that grade actually mean? A gemologist explains.