Madagascar Dendiritc Green Opal 10mm Round A Grade - 15-16 Inch Star Cut A Grade Shattuckite is a rare copper

Shattuckite is a rare copper silicate hydroxide mineral

orange and yellow colors in which it occurs

Dog Teeth Amethyst has a purple and white striped appearance due to its combination of Amethyst and White Quartz

At that time yellowish gems were called "topaz" in many parts of the world

Crazy Lace Agate is named for its swirling and circular patterns

Madagascar Dendiritc Green Opal 10mm Round A Grade - 15-16 Inch Star Cut A Grade Shattuckite is a rare copperThis variety of opal is named "dendritic" for the small inclusions within it that resemble moss or ferns. These inclusions consist of iron, manganese and other metallic oxides captured during the forming of the rock. Opals are hydrated amorphous forms of silica, created when silica hardens within the fissures of other stones.