How to Verify 925 Hallmark Silver Purity at Home in Pakistan

## Why 925 Hallmark Verification Matters in Pakistan Sterling silver is globally prized for its brilliance, durability, and precious metal value. By international metallurgy standards, **925 Sterling Silver** contains exactly **92.5% pure elemental silver (Ag)** and 7.5% copper or zinc to give it tensile strength. Pure 999 fine silver is too soft for everyday rings and bridal necklaces, making 925 the gold standard of heirloom jewelry. Unfortunately, many local markets sell "German silver" or brass flash-coated with micron-thin silver paint. Here is how you can verify your jewelry with authentic tests used by Karachi silversmiths: ### 1. The Hallmark Stamp Inspection Every authentic article crafted by Usmania Jewellers is struck with an official laser-engraved **"925"** or **"S925"** hallmark stamp on the inside of the ring shank, pendant bail, or earring post. Look for crisp, microscopic lettering that cannot be scratched away. ### 2. The Thermal Ice Cube Test Silver is the highest thermal conductor of all metals on Earth. - Place a fresh ice cube directly onto your silver jewelry piece. - Place a second ice cube on a regular plastic or stainless steel spoon. - If it is solid 925 silver, the ice on the jewelry will begin melting almost instantaneously, as if placed onto a hot stove, drawing heat into the metal. ### 3. The Neodymium Magnet Test Elemental silver is **diamagnetic**—it does not attract magnets. If you place a strong refrigerator or neodymium magnet near your silver jewelry and it clicks firmly against it, the piece is made of iron, nickel, or steel underneath. Genuine sterling silver will show zero magnetic pull. ### 4. The Clean Odor & Ring Sound Test Real sterling silver has no metallic copper or sulfur odor, even when rubbed vigorously between your fingers. Furthermore, when lightly tapped with another silver piece, genuine chandi produces a bell-like high-pitched ringing chime that resonates softly. At Usmania Jewellers, every article passes computerized X-ray fluorescence (XRF) spectral assaying before reaching your hands.