Brown Orthoceras and Ammonite Fossil Stone Coasters (4 Pieces) Menu Specimen with Cut Base Sardonyx is a combination of

Sardonyx is a combination of two different varieties of chalcedony in distinct layers

incorporated silica from local sand and other ancient creatures

This product contains seven different stone types

Purple Agate Slice Pendant with Gold Plating

Brown Orthoceras and Ammonite Fossil Stone Coasters (4 Pieces) Menu Specimen with Cut Base Sardonyx is a combination ofBrown Orthoceras and Ammonite Fossil Stone Coasters Uniqueness Guaranteed: Every item is one of a kind, making them ideal for all projects or designs. Origin: Morocco Pieces measure approximately 4 inches Orthoceras is an extinct genus of ancient cephalopods that lived during the Paleozoic era, particularly in the Ordovician period, which occurred around 485 to 443 million years ago. The name "Orthoceras" means "straight horn," referring to the