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Uruguay and USA
Cuprite is a copper oxide mineral frequently found in association with copper deposits as well as azurite
Naturally occurring in hues of blue-green to green with spots and streaks of red
transparent or translucent with a pearly luster
5 cm (5 3/8 in)
Prehnite 8mm Round AAA Grade - 15-16 Inch focals_collection Uruguay and USAPrehnite 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.
US$ 110.00
US$ 123.00
US$ 178.50
US$ 69.00
US$ 155.00
US$ 525.00
