Prehnite with Rutilate 8mm Round - 15-16 Inch R0083 Lapis was ground and processed

Lapis was ground and processed to make the pigment ultramarine for use in frescoes and oil painting

naturally occurring mineral composed of pure carbon

It is named for the Amazon River in Brazil

Weight: grams: 80-100 grams

Prehnite with Rutilate 8mm Round - 15-16 Inch R0083 Lapis was ground and processedPrehnite 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.