Solid Silver Ingot Keyring. Both 925 Sterling Silver Ingot design Keyrings have feature hallmarks on the front. The silver keyring is attached to a nickel plated split ring. Presented in a gift box. Our Silver Ingot Keyring are manufactured in the UK to a very high standard. There are 2 designs available at different weights and the ikon ingot has square corners compared to rounded corners on the other ingot keyring.