This is a freeform bowl or ashtray crafted from banded calcite, often referred to as onyx or Mexican onyx. It features striking natural color layers, including hues of gold, rust, white, and blue. The material is a type of banded calcite, not true onyx, which is a silicate mineral. Each piece is unique due to the natural variations in the stone's banding and coloring. It is fully polished but in the edges. 4” x 3.5”
