Ammolite Jewelry in Sterling Silver  

Fossil Gemstone Jewelry From the Rocky Mountains

Ammolite ranks between 3.5 and 4.5 on the Mohs hardness scale, making it softer than most gemstones. Jewelers often protect it with clear quartz or synthetic spinel caps, creating what the trade calls doublets or triplets. Our ammolite jewelry uses settings designed to shield the stone during wear while letting its full color play remain visible. The gemstone's iridescence comes from light interference within its aragonite layers, the same mineral structure found in pearls and mother-of-pearl. No two ammolite specimens show identical patterning. The colors depend on the thickness of those layers and how the original shell compressed over millions of years. SilverRush Style has offered natural stone jewelry since 2005. Browse our current selection of 11 ammolite pieces, each mounted in solid sterling silver. If a specific design catches your attention, consider acting soon. Ammolite inventory changes as these rare fossils become harder to source.