When you think about gemstones, top-of-mind choices include diamonds, or even rubies, sapphires, and emeralds—the “big three” ...

Ammolite: A rare biological gemstone from ancient seas Shelton believes the fossil they found is a true ammolite, even though it was found far from known ammolite-rich areas like Alberta, Canada.

It was classed as a gemstone by the World Jewellery Confederation back in 1981, and is relatively soft on the hardness scale with a Mohs of 3.5 to 4 – not to be confused with toughness, which is ...

The discovery of 2,000-year-old, iridescent green figeater beetle (Cotinis mutabilis) jewelry at two sites at Bears Ears National Monument in southeastern Utah may help solve a long-standing ...