Blue Onyx One Side Polished pyrite cluster is a silicate mineral that

is a silicate mineral that is found in metamorphic rocks

5 W X 1 H inches

Amethyst was considered a precious gem until the 18th century when large deposits were discovered in South America

7 H inches

and 1 inch in width

Blue Onyx One Side Polished pyrite cluster is a silicate mineral thatBlue onyx is a variety of the chalcedony mineral composed of banding of blue, white, and gray. Blue onyx is composed of silicon dioxide, and ranges from translucent to opaque with a vitreous glassy luster when polished. These pieces have only one side polished. You will receive one piece selected from our current stock. All pieces are of similar size and quality. Average Dimensions: 3. 25 L x 2 W x 2. 25 H inches Average Weight: 1 pound