Petoskey Stone (polished)-A maligano jasper Moss Agate is a variety

Moss Agate is a variety of the microcrystalline quartz chalcedony

crystalline silicate

and fluorescence make calcite a desirable mineral to collect

Orpiment & Realgar

purify the air

Petoskey Stone (polished)-A maligano jasper Moss Agate is a varietyA Petoskey stone is a rock and a fossil that is often pebble shaped and composed of a fossilized rugose coral, Hexagonaria percarinata. These coral colonies lived in a shallow sea that covered what is now the Great Lakes area during Devonian time, about 350 million years ago. You will receive the exact piece shown in the photos. Dimensions: 3. 25 L X 1. 75 W x 1 H inches Weight: 0. 33 pounds