c1940's Navajo hand stamped silver petrified wood cuff bracelet. No issues.

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. Anything marked is guaranteed to be what
it's marked, most bracelets are photographed on a 6" wrist (non hairy), rings
photographed on the appropriate sized finger when possible. With bracelets if
the measurement is not given in the description then inside circumference is
shown where the metal meets the number on the the cloth tape measure.