skiro
1 Answer
Yvonne57
Green tourmaline is often heated to lighten color in over saturated gems, like those commonly seen in Brazil. Other tourmalines are heated to alter one of the dichroic colors.
from: http://www.moregems.com/heat_treatment_of_gems
| 10 years ago. Rating: 0 | |
Top contributors in Uncategorized category
Unanswered Questions
K8
Answers: 0
Views: 7
Rating: 0
Is it possible to add more celebrities to the photo database?
> More questions...
Answers: 0
Views: 9
Rating: 0