Black Eye Agate 6mm Round 15-16 Inch Crystal Quartz having been worn by shamans

having been worn by shamans

but can be distinguished by its structure and its lower relative hardness

and it can be mottled or striated with veins of these colors

orange and rust are due to traces of hematite within the stone

Black Eye Agate 6mm Round 15-16 Inch Crystal Quartz having been worn by shamansBlack Eye Agate is a variety of Sardonyx which 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.