Will it be the dazzling diamonds from Luxembourg or Jordan?

This impressive diamond tiara, which features echoes of Art Deco in its design, is actually two tiaras in one. The piece can either be worn in its full form or in a smaller version that features delicate diamond spikes across the top. It belongs to Princess Sibilla of Luxembourg, a sister-in-law of Grand Duke Henri, who frequently loans it to friends and relatives. In 2012, the small version was worn by her sister-in-law, Countess Diane de Nassau, and in 2013, the full version was worn by Princess Sylvie d’Arenberg (pictured above) at the wedding of Princess Madeleine of Sweden.

This gorgeous abstract diamond fringe tiara belongs to Queen Noor, the widow of King Hussein of Jordan. She wore it often for gala events during her late husband’s reign, including important state visits. The piece resembles an exuberant sunburst in its design.