Search results for:

sapphire

Corundum Treatments

…lightly colored sapphires. This rarely utilized treatment duplicates natural radiation processes in corundum, so it’s undetectable.…

Zircon Buying Guide

13.00-ct blue zircon from Cambodia. Treatment is uncertain. Designed and crafted by Erik Stewart. 18kt yellow textured gold accented with natural…

Tangent Ratioing

Sapphire. The critical angle for Quartz is 40.49 degrees, the critical angle for Sapphire is 34.62 degrees. By using Tangent Ratioing you can…

Ready to learn how to identify gems on your own?

Join our mailing list below to download a FREE gem ID checklist tutorial. See what’s inside…

• Discover the 17 practical steps to gemstone identification (even if you’re just getting started with gemology)

• Learn how you can use specific tools to gather data, make observations & arrive at an accurate ID

• Explore a range of gemological tests… not only will you get familiar with the process but also time-saving shortcuts!