`` Fine silver '' , for example 99.9 % pure silver , is generally too soft for producing functional objects ; therefore , the silver is usually alloyed with copper to give it strength while preserving the ductility and appearance of the precious metal .
Pure silver , for example 99.9 % pure , is generally too soft for making objects for use . Therefore , the silver is usually alloyed with copper to give it strength while keeping the ductility and beauty of the precious metal .