Prehnite 8mm Double Heart Faceted - 15-16 Inch R1585 deep-blue copper mineral produced by

deep-blue copper mineral produced by weathering of copper ore deposits

The first rough material was offered for sale in Tucson in 2011 and is now regularly mined at the remote deposit site in Sonora

forming Tektite

” owing to its red appearance when sliced thinly or powdered

ranges in color from blue-green to green

Prehnite 8mm Double Heart Faceted - 15-16 Inch R1585 deep-blue copper mineral produced byPrehnite 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.