Fossil Shell is mostly Dolomite, Marble and Calcite with swirls of limestone, chert, and other impurities. It has beautiful gray, white and transparent markings making it appear to be a fossil.
It's also known as Marbled Shell Jasper, Sea Shell Jasper, Shell Marble, Shell Obsidian, even though it's not a Jasper nor an Obsidian.
Fossil Shell Tumbles
SKU: 50005FS