Onyx Triceratops michigan These pieces are polished into

These pieces are polished into the shape of a skull

and they alter the color differently

The iron oxidizes into reddish bands while the reduced iron creates green or whitish banding

referred to as aventurescence

Onyx Triceratops michigan These pieces are polished intoWith Pakistani 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 have been carved and polished into a triceratops dinosaur. You will receive one piece from our current stock. All are of similar size and quality. Average Dimensions: 2. 75 L x 1. 0 W x 1. 5 H inches Average Weight: 2. 35 ounces