Disk precision machined from high purity metal, ground surfaces, and laser etched labels
Disc is the size of US Quarter, 99.95% Pure
Disk approximate weight 7.28g
One Acrylic Case with magnetic latches
وصف
Cobalt is a chemical element with symbol Co and atomic number 27. Like nickel, cobalt is found in the Earth's crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. -Wikipedia Quarter and scale not included