Bidspirit auction | New silver testing acid kit...

New silver testing acid kit... - *Silver testing kit featuring a desktop wooden box. *Kit contents: 1. Wooden storage box for the acid, testing stone, and stone holder; the internal dividers are removable, allowing the box to be repurposed as a jewelry box. 2. Round testing stone (10 cm long). 3. Stone holder (9 cm long). 4. Silver testing solution. Instructions for use: Rub the item to be tested (jewelry, Judaica, collectibles, etc.) lightly against the testing stone. Remove a small surface layer in the test area to ensure a more accurate result. 1. Pure silver (999): The color produced on the test item is light red (bright/shiny). 2. 925 purity silver (Sterling): test result—the color produced on the test object is dark red. 3. 900 purity silver: test result—the color produced on the test object is dark red (burgundy). 4. 800 purity silver: test result—the color produced on the test object is brown. 5. 500 purity silver: test result—the color produced on the test object is green. 6. Nickel silver (German silver): test result—the color produced on the test object is dark blue. The item has been inspected and certified by the auction house.