793 carat, when it was first discovered. It is considered ...
Topaz is a silicate mineral of aluminium and fluorine. ...
A piece of jewelry that is attached to the ear through a ...
Emerald is a gemstone, and a variety of the mineral beryl, ...
Opal is a hydrated amorphous form of silica; its water ...
The Great star of Africa is another name for Cullinan ...
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