9999 pure silver wire 14 gauge - 2-6" pieces for making colloidal silver silver lining 9999 pure silver wire is the preferred purity for making colloidal silver. **** our silver is certified 99.99% pure. made in the usa. our customers demand the purist silver when making colloidal silver. 99.99% silver wire is 10 times as pure as 999 silver wire. we only sell 99.99% or better silver wire. we also sell 12 gauge and 10 gauge 9999 silver wire