Jewels, birthstones, and gemstones-these sparkling treasures have captivated humanity for centuries. But is there a ...

Such pieces have appeared in recent collections from independent jewelry designers and houses such as Cartier, Bulgari and ...

A 5.7-carat fancy intense blue diamond ring could fetch $6 million to $8 million during the Christie's Magnificent Jewels ...

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The discovery was made in the Taita Hills, near the Tsavo National Park, which inspired the gemstone's name. Along with the discovery of tsavorite, Bridges became enamoured with a purplish-blue stone ...

This means the archaeological record of human tool use is deeply skewed towards the much hardier stone. All this suggests that the origins of human technology could have been profoundly misunderstood.