Mined From: Toliara (Tulear), Southwestern Madagascar

Era: Lower Cretaceous (145 to 100 million years old)
Geological Age: Mesozoic

Description: The creature that used to live inside resembled a squid. Evidence leads us to believe they gained in size rapidly and females would grow up to 400% larger than the males. This shell that has been cut in half and polished on both sides. 
These are special because they are pyritized. Most ammonite slices are replaced by calcite. these ones were replaced by iron and sulfur oxidization.

Approximate size of 1 half: 30mm x 26mm x 7mm 
Approximate weight of 1 half: 8.5g

Quantity: 1 pair (You will receive matching halves)

We do our best to buy quality products- although not every rock is the same. If you choose to purchase the "staff pick option", we will select the best of the batch for you. Otherwise, it will be at random from the larger batch we have in stock.