AMM274 Ammonite with Negative (South Dakota) Moonstone Average size approximately 0

Average size approximately 0

green epidote

This is a polished specimen featuring shades of blue-gray agate

You will never have a rusted cutting platform of your machine again

that almost appear to glow

AMM274 Ammonite with Negative (South Dakota) Moonstone Average size approximately 0This 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 is a perfect example of a piece of these concretions, with the negative fossil impression paired with its ammonite fossil that fits perfectly inside it. Both pieces have ridges and sections with red iridescence.