How to Start a Gem Collection
Although many gem enthusiasts want to become collectors, they may not know where to begin. Read this article for tips on how to start a gem collection.…
Tanzanite Buying Guide
Master tanzanite buying with our expert guide covering the 4 Cs, treatments, simulants, and investment tips. Learn to identify quality tanzanite…
A Guide to Early Victorian Romantic Period Jewelry
The Romantic Period marked the start of the Victorian Era. Learn about the typical qualities of Romantic Period jewelry, including its sentimental…
Introduction to Diamond Treatments
As long as there have been gemstones, there have been attempts to improve their appearance. With the advent of numerous new technologies available…
Are Diamonds Really Rare? Diamond Myths and Misconceptions
Although diamond is our most popular gemstone, this hasn’t always been the case. Only in the last century did diamonds become readily available.…
Diamond Buying and the Four Cs, Part 2: Diamond Color
For most, color is probably the most familiar of the Four Cs of gem grading. However, diamond color grading is more confusing than you think. Learn…
Antique Engagement Rings
You can find many amazing antique engagement rings from a variety of time periods. Before you shop, learn more about these styles and how to identify…
Tanzanite (Zoisite) Value, Price, and Jewelry Information
Tanzanite has had a rapid rise to prominence among jewelers and gem enthusiasts. Although naturally reddish brown, this transparent zoisite…
IGS Become Member