Size: S size wrist circumference approx. 6.3 - 6.7 inches (16 - 17 cm), logo engraving, crystal 0.5 inches (12 mm), blue agate 0.4 inches (10.8 mm), cut glass 0.3 inches (8 mm), Rondell 0.3 inches (8 mm), *This product may differ with the engraved design of the L size and logo. Due to the nature of natural stones, there may be slight scratches and chips.