Cleoniceras Ammonite Small Inspiration Mine and typically colorless quartz

and typically colorless quartz

They are close relatives of sea urchins and heart urchins

BUT this piece does have a marvelous cluster of striated pyrite crystals on quartz

often precipitating from silica-rich water in cavities

Weighing 2 pounds

Cleoniceras Ammonite Small Inspiration Mine and typically colorless quartzAmmonites 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.