Natural Whole Cleoniceras Ammonite Fossils With Iridescent Ammolite Shells x 20 From Maintirano, Madagascar

A NOTE FROM NICK 
A tray of 20 natural whole Cleoniceras Ammonite fossils with Iridescent Ammolite Opal shells. Gorgeous blue, green, pink natural Ammollite opalisation. Approx. 110-120 million year old.

PRODUCT DESCRIPTION
Cleoniceras Ammonite Fossils with Iridescent Shell - Cretaceous, Maintirano Madagascar
Cleoniceras Ammonites from Maintirano, Madagascar, are stunning fossilized remains of marine molluscs that lived around 110-145 million years ago during the Cretaceous period. These ammonites are characterized by their tightly coiled, disc-like shells with fine, evenly spaced ribs on the surface. These are particularly exceptional due to the preservation of their nacreous shell layer, which displays a breath taking iridescence with vibrant hues of green, blue, red, and purple. The play of colors, caused by light interference within the aragonite shell, gives these ammonites an opal-like sheen, making them a rare and captivating addition to any collection.

PRODUCT MINERALS
Aragonite (Nacreous Shell), Calcite, Iron Oxides  

PRODUCT FEATURES
Iridescent Shell, Natural Surface, Ribbed Exterior, Fossil  

PRODUCT COLOUR
Green, Blue, Red, Purple, Brown  

MOHS HARDNESS SCALE
3.5 to 4  

PRODUCT DATA
Locality = Maintirano, Madagascar
Grade = Very Good to A Grade
Size = 40 - 61 mm