The identification methods for 999 pure silver include: looking at color, looking at hardness, weighing, listening to sound, and testing with concentrated hydrochloric acid.
The higher the purity, the whiter its color will be. 999 silver belongs to silver in silver jewelry, and its color must be a bright and glossy white. If the color of silver is not pure enough, the surface is very rough and not very moist, such jewelry contains copper.
2. Check the hardness
3. Weigh it
The density of silver jewelry is relatively high. If a silver jewelry looks large but weighs light, it may be fake. But this method cannot absolutely determine the authenticity of 999 silver, and other methods can be used to assist in the determination.
4. Listen to the sound
999 silver jewelry has a loud impact, but without rhythm, it won't bounce up. If copper is mixed into the bracelet, the sound emitted will be high and sharp, rapid and brief; The sound of lead and tin is dull and relatively short.
5. Testing with acid
Silver will undergo a chemical change when it encounters acid, producing the chemical substance silver chloride. As long as some concentrated hydrochloric acid is placed on the back of silver, white substances will be produced due to their chemical reaction, resulting in silver chloride. However, this method is prone to damaging silver jewelry, so caution should be exercised when using it.