A 54-pound rock. Estimated auction price: $2 million to $4 million. Why so expensive? It's the largest piece of Mars ever ...

The gem quality, distribution, and mining feasibility of anorthoclase from southeast Vietnam suggests a potentially valuable deposit. In addition, the locality could become a geotourism attraction ...

Glide over Nördlingen, Germany’s extraordinary medieval town, uniquely built inside a massive 15-million-year-old meteor crater. This stunning drone footage reveals its perfectly preserved ...

Gem-quality peridot has been identified in multiple pallasite meteorites, earning it the title of a “gemstone from another world.” ...

On May 8, 2025, ALROSA, Russia's leading diamond mining company, announced the discovery of the country's largest gem-quality diamond. The colossal amber-colored diamond, weighing 468.30 carats, was ...

"No other meteorite fall has been documented like this, complete with sound," says Dr. Chris Herd, a meteorite expert from the University of Alberta.

Weighing 55.22 carats, Estrela de Fura is the largest gem-quality ruby to come to auction After the stone’s grand unveiling at Sotheby’s Hong Kong, it will then embark on a worldwide tour ...

Chassignites are rocks made almost entirely of the green mineral olivine – you might know the gem-quality variety of this mineral, peridot. A cross-polarized light image of the Nakhla meteorite.