Silver cufflinks

Solid silver, or sterling silver, is an alloy of silver having minimum fineness of 925. Solid silver contains 92.5% pure silver and 7.5% other metals, usually copper. As pure silver (99.9% purity) is too soft for making large resourceful and utilitarian objects, silver is usually alloyed with copper (in the above mentioned percentage) so as to give it added strength whilst preserving silver's ductility and preciousness. Copper is primarily chosen in solid silver as it offers improved resistance to tarnish