Prehnite 2x3mm Rondelle Faceted A Grade - 15-16 Inch 48hr_09162025 Malachite is a copper carbonate

Malachite is a copper carbonate with a bright green color and dark green banding

red and brown

It is a rare variety of Pectolite

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the third to hardest common natural gemstone

Prehnite 2x3mm Rondelle Faceted A Grade - 15-16 Inch 48hr_09162025 Malachite is a copper carbonatePrehnite 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.