Cuffs are all made of sterling silver (unless otherwise noted) and natural stones. Cuffs can be slightly adjusted to fit, but please do not adjust every time it is worn. Carefully pull open or squeeze shut with two hands in small increments. Adjust the opening so that you can put the cuff on and take off without it coming off. Please note, repeated adjustments over time will weaken the cuff and is not my responsibility to fix or replace.