Prehnite 8mm Round Faceted A Grade - 15-16 Inch JUL4-4 including the Chin-goo 808 Mine

including the Chin-goo 808 Mine

but rather a dark variety of Carnelian

Queen Victoria’s granddaughter

Its color is due to the presence of Manganese and Iron in the stone

Generally this material is used for transistors and heat sinks and only recently has been used for jewelry and healing

Prehnite 8mm Round Faceted A Grade - 15-16 Inch JUL4-4 including the Chin-goo 808 MinePrehnite 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.