Sterling silver and turquoise cuff bracelet. 
Marked Sterling, and Native American makers hallmark stamp 'I' or 'H'
 
Measurements
Around the inside (including gap): 16,5cm - 6 1/2"
Gap opening: 2,7cm - 1 1/16"
 
Measurements for most cuffs are somewhat flexible, as they van be reshaped a little to a desired size.