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where it gets its name
Mohs Hardness: 7
Each stone is unique in terms of its patterns
its coloring is the result of the chemical reaction that occurs when copper is introduced to water
The color of Smoky Quartz is due to natural irradiation and traces of aluminum within the cryst
Prehnite 6mm Double Heart Faceted A Grade - 15-16 Inch grey_50_off where it gets its namePrehnite 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.
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