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
Quay Thu XS Mien Nam Co De Trung Lo Khong
Answers: 0
Views: 9
Rating: 0
555betslotnet
Answers: 0
Views: 8
Rating: 0
nk88anet
Answers: 0
Views: 13
Rating: 0
2288betsorg
Answers: 0
Views: 13
Rating: 0
Nhà Cái 23win
Answers: 0
Views: 13
Rating: 0
Surga88 Resmi - Situs Slot Online & Taruhan Bola Terpercaya di Indonesia
Answers: 0
Views: 19
Rating: 0
tr88 netim
Answers: 0
Views: 17
Rating: 0
DEBET⭐️Cá Cược Thả Ga, Tặng Ngay 100K Khi Đăng Ký
> More questions...
Answers: 0
Views: 18
Rating: 0