Size L: Wrist Circumference: Approx. 7.1 - 7.5 inches (18 - 19 cm), Logo Engraved, Crystal 0.5 inches (12 mm), Agate/Onyx, 0.4 inches (10,8 mm), Cut Glass 0.3 inches (8 mm), Rondell 0.2 inches (6 mm) *Due to the nature of the natural stones, there may be slight scratches and chips.