is an alloy of silver containing 92.5% by weight of silver and 7.5% by weight of other metals, usually copper. Argentium sterling replaces a very small (>1%) amount of copper with germanium to prevent tarnish
Reticulation (Coin) Silver
is an alloy of silver containing 80% by weight of silver and 20% by weight of other metals, usually copper. This alloy has a lower melting temperature than sterling, enhancing the effects of reticulation.
An alloy of copper and tin, prized for it's gold-like appearance and high durability.