susie clark , of evening shade , found the 3.69-carat white diamond in a 37.5-acre search field on thursday , her last day of a trip to the park with her husband .
clark , who first visited the park 33 years ago with her mother and grandmother , prayed to god , asking , ` are you doing to bless me and let me find a diamond today ? ' as she searched the field .
susie clark , of evening shade , arkansas , found a 3.69-carat white diamond on a search field at crater of diamonds state park in arkansas .