When appraising pearls, check any well-matched colored strands for evidence of dyeing. Photo by Em and Ernie. Licensed under CC By-SA 2.0.
Opaque Red Pearl Rough, Dyed
When appraising pearls, check any well-matched colored strands for evidence of dyeing. Photo by Em and Ernie. Licensed under CC By-SA 2.0.
Article: Appraising Pearls: How to Grade Pearls
Credit: Em and Ernie
| Gemstone | Pearl |
| Treatments | Dyeing |
| Natural or man made | Natural |
| Gem State | Rough |
| Color | Red, Yellow, Blue, Brown |
| Transparency | Opaque |