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
| 14 years ago. Rating: 0 | |
Top contributors in Uncategorized category
Unanswered Questions
ae888fifa55city
Answers: 0
Views: 12
Rating: 0
luck8r1com1
Answers: 0
Views: 13
Rating: 0
congadenso1vn
Answers: 0
Views: 14
Rating: 0
hay88ventures
Answers: 0
Views: 14
Rating: 0
cổng game go88
Answers: 0
Views: 12
Rating: 0
new88v20com
Answers: 0
Views: 14
Rating: 0
vapecroatianet
Answers: 0
Views: 16
Rating: 0
w88inthai
> More questions...
Answers: 0
Views: 16
Rating: 0