Prehnite Natural 6-7mm Table Cut Cube A Grade - 15-16 Inch *CHKRA-ORG Rocky Butte Jasper strands are

Rocky Butte Jasper strands are predominantly shades of gray

Natural topaz colors include rare and valuable yellow

Kambaba Jasper is one of the more exotic Jaspers

and this phenomenon is thought to be due to impurities of yttrium or organic matter within the crystal lattice

The most highly regarded colors are the reds and pinks

Prehnite Natural 6-7mm Table Cut Cube A Grade - 15-16 Inch *CHKRA-ORG Rocky Butte Jasper strands arePrehnite 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.