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Black 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.
Stone Type: Agate
Approx. Hole Diameter: 0.8-1.00mm
Mohs Hardness: 7
Item Type: Round