Ammonite Fossil Pendant in 14K gold plated brass, designed by [Ontogenie Science Jewelry]
ammonite pendant 14K gold plated brass rotate video
Ammonite Fossil Pendant in 14K gold plated brass, designed by [Ontogenie Science Jewelry]
Ammonite Fossil Pendant in 14K gold plated brass, designed by [Ontogenie Science Jewelry]
Ammonite Fossil Pendant, gold reversible 3d Printed necklace by [Ontogenie Science Jewelry]
Ammonite Diagram British Geological Survey [Ontogenie Science Jewelry]

Ammonite Fossil Pendant

Regular price148.00 €
Tax included. Shipping calculated at checkout.


This detailed and reversible pendant is inspired by ammonites, shell fossils of the extinct marine mollusk group Ammonoidea. Ammonites are most closely related to cephalopods (octopuses and squid) and were able to snare prey with their sharp jaws, pulling fish and crustaceans inside their shell to eat them. They are a useful indicator species for the geologic age of rock since ammonites had slightly different shell shapes in different geological periods. Ammonites are some of the most abundant fossils on earth. Both sides of this pendant are beautiful so you can wear one side facing out on one day and the other side the next day.

The Ammonite pendant is 2 cm (0.8 inches) wide and 2.5 cm (1 inch) long.

The pendant is 3D printed in14K gold plated brass or sterling silver, finished with a 45 cm/18 inch long gold plated silver chain or silver chain to match, and is ready for gift giving with a gift box, polishing cloth, and care instructions. 

Please note: the video is a computer animation designed to show all sides of the pendant and may not accurately represent the color of the metal.

All orders over 50 Euro ship FREE. Under 50 Euro shipping = 5.50 €

Jewelry Shipping

Jewelry in stock at Ontogenie will be ready for shipping within 1-3 days. Jewelry on backorder requires 3-4 weeks production time before it can be shipped.

Transit times:

  • Germany: 1-2 days
  • EU: 2-4 days
  • Europe, nonEU: 5-7 days
  • USA, Canada: 9-12 days
  • Australia, New Zealand: 10-17 days

For faster delivery, you can choose "Express Shipping" at checkout. Cost is 25.99 € for UPS 1-2 day service.

You will be notified by mail when your order ships and given a tracking number so that you can follow your shipment.

Your jewelry will be gift-wrapped in original Ontogenie packaging.

Please note that packages may be delayed for reasons beyond my control. In the unlikely event that your jewelry shipment is held by your local customs office, you are responsible for paying any customs fees and import taxes incurred.

**Orders to the United Kingdom of more than 135 GBP/158 Euro will incur import duties that must be paid by the customer at the time of receipt of the package in the UK. If you do not pay the import duties, the jewelry will be destroyed or returned, and your order will not be refunded.**

Art Prints, T-Shirt, Mug, and Tote Bag Shipping

Printing of these products requires 2-7 days fulfilment time at a printing facility as close to your location as possible. After fulfilment, your shipment should arrive in 3-10 business days.

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Customer Reviews

Based on 1 review
Katherine M.
Ammonitologist Reacts to Ontogenie Ammonite Necklace

Amazing! Thank you so much! I am an invertebrate paleontologist who studies ammonites in real life and it's very hard to find things for myself that have both personal meaning and a gorgeous, high-quality aesthetic. I love this piece and I wear it almost every day. I will definitely buy more pieces from you in the future!