The fluke bracelet is a byzantine chain with strong click lock clasp and extra safety hinge. They have a large Swiss blue Topaz or Peridot gemstone measuring 8mm x 14mm they are set in solid sterling silver 925. They represent the majestic humpback whales that migrate to Hawaii in the winter to birth their young. You can view them in the waters of the big island from December until March every year. The whales are majestic and adored by everyone, these bracelets are fantastic memorabilia of the Hawaiian islands.