Size L: Wrist Circumference: Approx. 7.1 - 7.5 inches (18 - 19 cm), Logo Engraving Onyx 0.7 inches (18 mm), Onyx 0.6 inches (16 - 14 mm), Cut Crystal 0.5 inches (14 mm), Rondell 0.4 inches (10 mm) *Due to the characteristics of natural stones, there may be slight scratches or chips.