FROM LEFT: Red sponge coral necklace, David Yurman (price on request). Bal Harbour Shops, 9700 Collins Ave.; Brown- and black-diamond, onyx, quartz and red coral lobster ring, Stephen Webster ($23,000). Saks Fifth Avenue, 3109 PGA Blvd., Palm Beach Gardens; Red and orange enamel starfi sh brooch set in 18k gold, Tiffany & Co. ($25,000). Bal Harbour Shops;

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