Simbircite (pyritized fossil ammonite) pendant, 23x38mm, gold-plated bail. We will send it to you securely packed in the professional jewelry box with the “Les Deux Artisans” logo (as shown on the picture).
About the stone
Simbircite is a beautiful semi-transparent stone which has a nice amber color with shades of brown, white, red or green. It was named after the city of Simbirsk (former Ulyanovsk) in Central Russia. The first records of this mineral are dated back to 1765, but it received its current name only in 1985.
It is a conglomerate of calcite, marl, pyrite, and fossilized fragments of ammonites and other ancient sea life forms and was mostly formed in Cretaceous period, 95-65 million years ago. The beautiful and rich amber color, with shades of brown, white, red or green is an agatized material that fills in chambers of the ammonite mollusc with a complex mix of iron and magnesium rich calcite , aragonite, pyrite, and quartz. The veins of pyrite in Simbircite were originally the shell walls of the ammonite.