2 Answers
Opals should be protected from chemicals, high heat, and harsh wear. Because opals contain 5 to 10 percent water, some opal has been known to dry out and craze (small hairline cracks) after a short while or even after a lifetime of use in a piece of jewelry. Ideally they should not be stored in dry, air-tight containers like safe-deposit boxes. Opal jewelry should be cleaned with mild soapy water and a soft brush or cloth.
Source >>>http://www.jtv.com/library/opal-gemopedia.html
11 years ago. Rating: 1 | |
Top contributors in Uncategorized category
Unanswered Questions
nhacaibong88vn
Answers: 0
Views: 5
Rating: 0
nhacaibong88vn
Answers: 0
Views: 3
Rating: 0
Quần Áo Bảo Hộ Xanh - Trang Web Uy Tín Về Bảo Hộ Lao Động Toàn Diện
Answers: 0
Views: 9
Rating: 0
hi88health
Answers: 0
Views: 9
Rating: 0
ta88betbet
Answers: 0
Views: 7
Rating: 0
Bongdalu - Cập nhật nhanh chóng kết quả bóng đá, tỷ lệ kèo chính xác!
Answers: 0
Views: 7
Rating: 0
vb777clubme
Answers: 0
Views: 5
Rating: 0
vb777clubme
> More questions...
Answers: 0
Views: 5
Rating: 0