6.25" Vintage Navajo stamped silver bracelet with turquoise 4mm wide, unmarked, circa mid 20th century. All precious metals are tested and guaranteed, any Native American jewelry referred to as Silver or Sterling is guaranteed to be a minimum of 90% (coin) silver and possibly higher content. With Bracelets now I am trying to give the length of the center of the bracelet or the widest point that points from your hand to upper arm in Millimeters, 1 inch = 25mm.