One of a Group of Bone Ornaments

The object is small, circular and shallow. The object has a circular depression in its center. The object is made of bone. The object has a reddish-brown color with some darker areas. The object has rough texture and appears to be weathered. The background is a solid gray color. The object is centered in the image. The object casts a shadow on the background. The object appears to be an ornament. The object is likely an old or antique item.