Sardonyx 8mm Star Cut Coin - 15-16 Inch Charms black or brown veins running

black or brown veins running through it in web-like patterns

It is typically white or light gray with gray

Iron gives them blue

Bloodstone most commonly refers to green Jasper with red inclusions consisting of Hematite

Blue Crazy Lace Agate is actually Mexican Crazy Lace Agate that has been color enhanced with blue to bring out the beautiful patterns in the stone

Sardonyx 8mm Star Cut Coin - 15-16 Inch Charms black or brown veins runningSardonyx 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.