AP Posted: 2007-12-31 23:06:55 LAKE WORTH, Fla. (Dec. 31) - A Florida couple could be having an extra happy new year after finding a rare purple pearl while eating a plate of steamed clams. George and Leslie Brock stopped into Dave's Last Resort & Raw Bar on Friday during a day at the beach. George Brock was about halfway through a dozen clams when he chomped down on something hard - a rare iridescent purple pearl. At least one expert said the find could be worth thousands. "Few are round and few are a lovely color, so this is rare," said Vermont gemologist Antoinette Matlins. "I think they have found something precious and lovely and valuable." The gems occur most frequently in large New England quahogs, clams known for violet coloring on the inside of their shells. Brock's $10 plate of clams came from Apalachicola in the Florida Panhandle, said restaurant manager Tom Gerry. The Brocks, of Royal Palm Beach, plan to have the pearl appraised and said they'll sell it if it's worth a lot of money.