Sterling silver melt value calculator how can a troy ounce of precious metal be more than an sterling silver melt value calculator how much is silver worth by the ounce sapling as silver nears 50 an ounce coin merchants report short silver spot prices per ounce today live bullion price chart usd. How much is a Franklin Mint silver ingot worth? A reader inquires about the value of his Franklin Mint Bicentennial sterling silver (.925 fine) ingots. Coin World answers. The silver price is based in troy ounces and that means we need to multiply the metal price by .0321507466 to make the conversion to grams. 1. Calculate 90% silver value : (14.73 × .0321507466 × 6.25 × .90) = $2.6638886904 $2.6638 is the rounded silver value for the 1932-1964 silver quarter on March 13, 2020.