Prehnite Natural 6-7mm Table Cut Cube A Grade - 15-16 Inch *CHKRA-ORG Natural topaz colors include rare

Natural topaz colors include rare and valuable yellow

gray and purple

Sardonyx has a Sard base

Rhodonite belongs to the Pyroxenoid group of minerals

Opalite is the trade name for man to made glass treated to exhibit the internal flashes of true Opals in translucent samples

Prehnite Natural 6-7mm Table Cut Cube A Grade - 15-16 Inch *CHKRA-ORG Natural topaz colors include rarePrehnite 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.