Green Onyx Coaster spotted agate These pieces are polished and

These pieces are polished and carved into a shape of Michigan

The distinctive

and typically colorless quartz

Ruby Kyanite occurs when red ruby (corundum) crystals form within a blue kyanite matrix

Green Onyx Coaster spotted agate These pieces are polished andPakistani onyx, the bands formed by the deposition of calcite saturated with iron. The iron oxidizes into reddish bands while the reduced iron creates green or whitish banding. These pieces are polished into coasters. You will receive one piece selected from our current stock. All pieces are of similar size and quality. Average measurements: 3. 75 L x 3. 75 W x 0. 25 H inches Average weight: 2. 55 pounds