Prehnite 4mm Round AAA Grade - 15-16 Inch 24x36-30x46mm green and brown to the

green and brown to the more rare violet and pink

It was originally found in the Ural mountains of Russia

Arusha Sunstone is a combination of Feldspar and Beryl

Round Nose

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Prehnite 4mm Round AAA Grade - 15-16 Inch 24x36-30x46mm green and brown to thePrehnite was the first mineral to be named after a person: its discoverer, Dutch Colonel Hendrik Von Prehn. Von Prehn discovered the stone in South Africa in 1774. Prehnite is translucent to transparent, in colors from light green to yellow green to olive, with occasional inclusions of Black Tourmaline that crisscross the stone in fibrous patterns. It is a phyllosilicate composed of silicon, calcium and aluminum with trace amounts of iron.