AMM269 Ammonite Fossil (South Dakota) Tourmaline but can also display yellow

but can also display yellow

and black in color

1 lb lot contains 20 - 30 pieces of approximately 1" fully tumbled stone

These fluorite points or towers have a flat base to stand on

The center pattern is surrounded by another ring of quartz

AMM269 Ammonite Fossil (South Dakota) Tourmaline but can also display yellowThis 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 complex leafy suture patterns in light and dark brown, some filled with pale yellow calcite. Some sections of pearly shell remain that show strong rainbow iridescence. 4. 75" x 3. 5" 10. 8oz