AMM270 Ammonite Fossil (South Dakota) Polished Pebbles and blue-gray jasper

and blue-gray jasper

This Coyamito Agate specimen is polished over a slight curve and has a large vug with some parts covered in druzy

This large polished slab features shades of tan and earthy green jasper with red and black detailing

you can cut without any problems for years

This specimen contains gold

AMM270 Ammonite Fossil (South Dakota) Polished Pebbles and blue-gray jasperThis ammonite specimen comes from South Dakota in the Cretaceous period when the area was submerged by the Western Interior Seaway millions of years ago. They are typically preserved in hard concretions that must be carefully removed. This sizeable fossil shows leafy suture patterns and outer ridges in pale yellow calcite and shades of tan and brown. 4" x 3" 6oz (172g) Ammonites are prehistoric nautilus related to the modern day nautilus, squid, and