Ammoniteare the most widely known and
admired fossil typically formed from sea creatures over 65 million years ago.
Fossilized Ammonites, Ammonoid
cephalopod fossils belong to the order Ammoniated and are characterized by a
thick, ornamented shell with sutures (seams) and finely divided lobes and
Ammonite has incredible natural
design patterns so they are popular for making stunning earrings or pendants.
The international coloured
gemstone CIBJO has only recognized five other gemstones that are organic including
pearls, coral, amber and jet. These were once all living creatures.
Ammonite has been compared to opal as the structural formation
is iridescence. Ammonite mineral specimens are popular as their natural
patterns are unique to each ammonite specimen.
Ammolite shell is composed of
aragonite, same material that makes pearls.
Ammolite is also known as
Ammonite shell, Gem ammonite, Korite, Calcentine, Appoak.
CHEMISTRYVariable, may include
aragonite, calcite, silica, pyrite, or other minerals
INDEX1.52 - 1.68
HARDNESS4.5 - 5.5
CLEAVAGENone, parting present
were at their most diverse during the Mesozic period, which roughly corresponds
with the age of reptile and dinosaurs. Molluscs ammonites are usually have
large eyes and long tentacles similar to squids.