Tourmaline
Properly disclosing enhancements to gemstones can be challenging. Some common treatments leave no traces. For example, undetectable heat treatments can lighten blue and green tourmalines.
Article: Disclosing Enhancements: A Gemologist’s Guide
Credit: tourmalines
Gemstone | Tourmaline |
Natural or man made | Natural |
Gem State | Rough |
Color | GreenPink, |
Transparency | Translucent |
Multi-color | Bi-color |