Prehnite 3x4mm Rondelle Faceted A Grade - 15-16 Inch New Faceted Shapes but a combination of minerals

but a combination of minerals

but rather a speckled teal Jasper found in Africa and often treated to simulate the beautiful blue to green associated with true Turquoise

Cherry Quartz is a manmade mixture of clear glass with swirls and flecks of deep pink

calcium carbonate and other materials

These Muonionalusta Meteorite beads

Prehnite 3x4mm Rondelle Faceted A Grade - 15-16 Inch New Faceted Shapes but a combination of mineralsPrehnite 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.