Cleoniceras Ammonite Small pyrite cluster Oregon Agate is classified as

Oregon Agate is classified as a type of opaque

which are responsible for the range of colors from red

Mica has a monoclinic crystal system and peels into sheets

The fluorescence is due to the sodalite inclusions which glow under both long and short wave UV light

Cleoniceras Ammonite Small pyrite cluster Oregon Agate is classified asAmmonites were ocean dwelling mollusks that lived from the mid Devonian (388 million years ago) through the Cretaceous (66 million years ago). The closest living relatives found today are octopus, squid, and cuttlefish. These fossils are found in sedimentary rock layers of limestone, clay, or shale. The mineral composition of the shell can include iron, manganese, and aluminum, creating vibrant colors. You will receive the exact item pictured