Custom Order — 195 Million Years in the Making #4 | Promicroceras Ammonite Pendant (Approx. 3 weeks)

Early Jurassic Promicroceras Ammonite Fossil, c. 195 Million Years Old

An authentic ammonite fossil formed during the Early Jurassic period, discovered on the world-renowned Jurassic Coast of England near Charmouth Beach.

Its spiral ridges are preserved in exquisite pyritized detail, giving the fossil a natural metallic luster that has endured for nearly 200 million years. This remarkable preservation makes each piece both a scientific relic and a striking natural jewel, now transformed into a wearable pendant.

The Fossil

• Species: Promicroceras

• Age: ~195 million years (Early Jurassic)

• Location: Charmouth Beach, Dorset, England

• Size: ~14 mm at widest point (see images for comparison with a U.S. quarter)

• Preservation: Pyritized with exceptional spiral and ridge detail

The Setting & Chain

• Available in solid 18k gold or sterling silver

• Bezel setting: A smooth, classic frame shaped to the fossil’s contours for maximum security

• Prong setting: Minimalist holds at key points, leaving more of the fossil visible

• Each mount is hand-shaped, hammered, and polished without adhesives

• Matching sterling silver chain included; upgrade to 14k/18k gold chain available

• Production time: approximately 3 weeks from order date (rush options available)

The History

The Jurassic Coast of Dorset is a UNESCO World Heritage site and one of the richest fossil-bearing regions in the world. Ammonites like Promicroceras once thrived in its shallow seas, their coiled shells becoming enduring symbols of life’s evolution and resilience.

Pyritization, the process by which iron pyrite replaces the original shell material, preserved this ammonite in gleaming metallic form. Nearly 200 million years later, it endures as a fossil of extraordinary detail — a fragment of Earth’s ancient oceans, now reimagined as jewelry.

What’s Included

• Authentic Early Jurassic Promicroceras ammonite fossil (~195 million years old)

• Full guarantee of authenticity, backed for life

• Custom hand-made sterling silver or 18k gold setting

• Matching chain (sterling silver standard; gold upgrade available)

• Signed certificate of authenticity with historical background

• Luxury display box

• Free insured U.S. shipping (international available)

• 7-day return and exchange policy