2016-10-12
Agate:

Agate /ˈæɡət/ is a cryptocrystalline variety of silica, chiefly chalcedony, characterized by its fineness of grain and brightness of color. Although agates may be found in various kinds of...

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2016-10-10
Amethyst:

Amethyst is a violet variety of quartz often used in jewelry. The name comes from the ancient Greek ("not") and  méthystos ("intoxicated"), a reference to the...

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2016-10-11
Baryte:

Baryte or barite (BaSO4) is a mineral consisting of barium sulfate.The baryte group consists of baryte, celestine, anglesite and anhydrite. Baryte is generally white or colorless, and is the...

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2016-10-16
Chalcedony:

Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. These are both silica minerals, but they differ in that quartz has a trigonal crystal...

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2016-10-16
Competition #1 for the best Indonesian shop on GOLPERA:

Dear Indonesian stone artisans,

We are pleased to announce a competition #1 for the best Indonesian shop on GOLPERA stone craft marketplace in October 2016.

It's easy to set...

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