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Gemstones Buyer's Guide
Suppliers Directory | Trade Leads | Trade Events | Publications | Trade Associations |
Gemstones Buyer's Guide
| Hardness | : | 6.0 to 6.75 |
The natural
Black Mops are also well recognized as "Black Mother of Pearls".
The black color of these natural stones varies from place to place
according to the amount of impurities present in them. These stones
are cut and designed according to the industrial requirements of the
beads made out these stones. Due to the presence of other minerals,
several bands of other colors can be observed on the surface of
them. 
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