Rare antique diamond necklace expected to fetch more than £1m at auction - The 18th century diamond jewel of approximately 300 carats was worn to King George VI and Queen Elizabeth II’s ...

After changing hands in the 1960s, the diamond necklace has not been seen in public for nearly 50 years. It was last exhibited at the American Museum of Natural History's Bicentennial Exhibition ...

A dazzling, 18th-century diamond necklace with ties to royalty could fetch up to $2.8 million at Sotheby's Royal and Noble Jewels auction in November.