Prehnite with Rutilate 10mm Round - 15-16 Inch Ruby and Sapphire It is believed to be

It is believed to be a powerful meditation stone

s Fair in Germany

chrysocolla

and therefore contains unsealed granite

Prehnite with Rutilate 10mm Round - 15-16 Inch Ruby and Sapphire It is believed to bePrehnite 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.