A Cartier diamond and turquoise tiara once owned by Nancy Astor, an American-born British politician who became the first ...

The diamond and turquoise tiara sold for 889,400 pounds, three times the estimate, at Bonhams’ London Jewels sale.

The diamond Kokoshnik tiara, which was created in 1888, actually pulls double duty—though Camilla wore it on her head, she could have worn it as a necklace, as the Garrad Royal Ledger states.

Queen Camilla often honors the memory of Queen Elizabeth II by wearing pieces of the late monarch’s jewelry on special occasions and for royal engagements. Over the course of the last few years ...

The diamond accented piece can be worn as a necklace too. Though, when Princess Anne, the Queen’s daughter, wore it for her wedding in 1973, she wore it as a tiara. Getty Images Sophie ...

This tiara is most closely associated with Princess Diana, but was made for Queen Mary (modeled on her grandmother's tiara) ...

If a diamond tiara seems like an extravagant novelty worn on the rarest of occasions, jewelers point out that many designs have mechanisms that allow them to convert into a necklace or be taken ...

The eleven rosettes of diamonds can be unscrewed from the original 15-inch necklace using a special ... rest of the piece on to the frame of the tiara. (Don’t worry, the tool is included in ...

Queen Mary is no stranger to a dazzling tiara ... necklace form. Queen Margrethe wore the diadem on her son Crown Prince Frederik's wedding day Most notably, the former monarch wore the diamonds ...