This handsome vintage cold chisel Navajo Indian silver and turquoise pill box measures approximately 2″¼ by 1″? By 10mm high Weighs 22.3grams. No marks but tested as sterling silver great addition to your collection This unique pill box has a stamping design referred to as “cold chisel”. The process entails hammering the silver with a metal chisel without the silver being pre-heated to make it softer. Stamping silver with doing this is much more difficult and requires a higher skill level.