From Tanzanite to Benitoite, this article unveils the five rarest gemstones in the world that hold more than vibrant colors.

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There's a mineral so rare that only one specimen of it has ever been found in the entire world. It's called kyawthuite ( cha-too-ite ), a tiny, tawny-hued grain weighing just a third of a gram (1.61 ...

Although the House of Savoy is still in exile after the Italian monarchy was abolished, they have kept many of their stunning ...

Is it an extraterrestrial gem or a rare glass formed due to natural calamities ... ancient rivers flowing through the desert carried the stones to various parts of the desert.

A team of archaeologists has discovered a rare rock used to make tools in the Stone Age. The "polishing boulder", found in the Valley of the Stones near Dorchester, would have been used to make ...

A rare poster promoting one of the Rolling Stones' earliest concerts that was found in a loft has sold for £15,000. The original poster advertised a show at Bristol's Colston Hall in 1964 during ...

Only about 20 such "bildstein" (picture stones) have been discovered along the Baltic coast of Germany and Poland. These medieval artifacts typically show human figures with distinguishing ...

The rover discovered rare sulphur-rich stones, indicating potential signs of past microbial life. Curiosity is now heading to the boxwork formation, a region that may hold further insights into ...