Ammolite is a rare organic gemstone and is sometimes compared to opals in brilliance and pearl as in the structure of the pearl.
It is mostly mined in the Rocky mountains and Canada.
It can be assumed that Ammolite is one of the rarest gemstones on Earth.
Its composition is of fossilized shells of ammonites which is made or Aragonite, which is also found in the composition of Nacreous Pearls.
Ammolite hardness is between 4.5 and 5.5 (soft for a gemstone).
Ammolite consists of very thin sheets of iridescent colour play