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deep-blue copper mineral produced by weathering of copper ore deposits
red and brown
Labradorite is usually gray to green
Princess Patricia of Connaught
Black Eye Agate 6mm Round 15-16 Inch Amethyst deep-blue copper mineral produced byBlack 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.
US$ 36.00
US$ 145.00
