In November, a 300-carat necklace will be auctioned off at Sotheby's auction house in London. The stones in the necklace may have come from a necklace that belonged to Marie Antoinette. The jewelry ...

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Weighing 300 carats - the rare diamond necklace was made in the decade before the 1789 French Revolution. Made up of three rows of diamonds with diamond tassels at each end, the piece has gone on ...

Diamonds and other gemstones are weighed in metric carats: one carat is equal to 0.2 grams, about the same weight as a paperclip. (Don’t confuse carat with karat, as in “18K gold,” which refers to ...

MURFREESBORO, Ark. – A visitor to the Arkansas Crater of Diamonds State Park left with a 2.3-carat diamond to commemorate the trip. Park officials said the unnamed visitor arrived at the park at its 8 ...

MURFREESBORO, Ark. (Gray News) - A visitor at Arkansas’ Crater of Diamonds State Park made a sparkling discovery after finding a 2.3-carat diamond. According to a press release from Arkansas ...

A diamond necklace that has been worn at two British coronations, and is thought to have stones from the infamous necklace at the heart of a Marie-Antoinette scandal, is expected to fetch up to $2 ...