MATTE Purple Sardonyx (dyed) 10mm Star Cut Round - 15-16 Inch *CHKRA-ORG and because its hardness has

and because its hardness has made the stone perfect for beads and cabochons

Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins

and veins within the tan

It is often thought of as an all-black stone

calcium carbonate and other materials

MATTE Purple Sardonyx (dyed) 10mm Star Cut Round - 15-16 Inch *CHKRA-ORG and because its hardness hasSardonyx has a Sard base, typically of brown or black, with bands of white Onyx running through it. Sard is not Onyx, but rather a dark variety of Carnelian. Sardonyx is sometimes treated to bring out its reddish tones. It is believed by some to improve memory and increase analytical skills.