Ammolite (Opalescent Placenticeras Fossil)

Item Description

Ammolite is the trade name that has been designated for the gem quality opalescent fossils shells of Ammonite (Placenticeras) primarily from Alberta, Canada. These stones have been analyzed and they actually have verified as Aragonite, so this is one of those cool blendings of the gem/mineral/fossil world all in one place. You don't see a lot of gem quality fossil material from any world locality, let alone one that contains an actual mineral species. These stones are what is referred to as a biogenic gemstone, meaning that it came from or contains organic material, e.g., Pearl, Amber or Coral. What makes Ammolite so enticing is the intense rainbow of colors that they exhibit, ranging from fiery reds and oranges to shimmering cool greens, blues and purples. According to the listing from Wikipedia, "unlike most other gems, whose colors come from light absorption, the iridescent color of ammolite comes from interference with the light that rebounds from stacked layers of thin platelets that make up the aragonite". A lot of the Ammolite you'll see on the market has breaks or cracks due to the fact that the material is somewhat fragile, and upon exposure to the freezing and thawing of the ground along with the general compressions from being in the soil, the thin Ammolite will often crack and flake. This stone is features zero cracks or breakage and it's complete / solid throughout. This "rectangle" cabochon cut gem features wonderfully rich blue and green hues on one end which transition into lovely yellow, gold, orange and slightly red tones on the other end.. Great quality throughout, and hard to find on the market now. Don't miss out on this one, it's fine quality and according to what I've been told, little mining has been done recently.