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Fluorite is one of the most abundant minerals in the earth's crust, along with quartz, feldspars, calcite, and hydroxyl apatite.

Irnimite is the name of a variety of banded-spotted jasper, which has a distinct blue and blue color due to the admixture of rhodusite.

The most common refining method for Paraiba tourmalines is heat treatment.

The modern princess brilliant cut was developed and introduced between 1979-1981.

Among the wide variety of diamond cuts, there are even those related to space.

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