AMM268 Ammonite Fossil (South Dakota) Rainbow Sapphire featuring brecciation and some egg

featuring brecciation and some egg patterning

It features bright yellow banded and mossy agate

and pink jasper

This polished cabochon features brecciated patterning in dark green and maroon jasper

AMM268 Ammonite Fossil (South Dakota) Rainbow Sapphire featuring brecciation and some eggThis 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. The surface of this fossil shows complex suture patterns in overall shades of warm brown, with little spots of red or purple iridescence. It has a smooth outer surface with a sharp spine. 3" x 2. 25" 58g Sphenodiscus