Check for purity stamps such as 925, Sterling, 999, Fine Silver, or 800
Look for hallmarks from recognized assay offices or manufacturers
Use a magnet test; real silver is not magnetic
Weigh the item and compare it with expected silver density
Perform a nitric acid test
Use an electronic silver tester
Use X-ray fluorescence testing
Check for tarnish; real silver often darkens over time
Rub with a soft white cloth and look for black residue
Compare color and luster with known silver samples
Have it tested by a jeweler or assay office