Neither - gold is too expensive (thousands are produced each year) and lead is toxic. Most military medals are made of either bronze, zinc alloy, or pewter.
The medals this year are made partly from recycled computer parts and other recycled plastic. The designs are cast from a singular amorphous model. Each medal bears the stamp of part of a whole...
The U.S. Government (including its military branches) do not provide "replacement" certificates.
The only option is to purchase a replacement through the vendor at www.cylentstudios.com
Cylent...