Maintaining a beautiful, bright shine is essential for jewelry. This feature ensures that metal surfaces stay clean and radiant over time without turning dark or discolored, giving consumers confidence that their favorite pieces will look new for longer.
The Science of Tarnishing Resistance
Tarnishing is a completely natural process that happens to certain metals, but it can be highly annoying for jewelry lovers. It occurs when metals like silver react with everyday elements in the air, moisture, and even the natural oils or sweat on our skin.
A common culprit is sulfur, which can be found in the air, certain foods, or everyday items like cosmetics and perfumes. When these elements touch the metal, they cause a mild chemical reaction on the surface, creating a thin, dark layer. High-quality, tarnish-resistant jewelry is treated with protective steps—such as applying an invisible, ultra-thin protective shield or mixing special protective elements directly into the metal—to block these everyday elements from causing discoloration.
Validation through the High Performance Mark
By meeting selected technical benchmarks, your jewelry products become eligible for the Intertek High Performance (HP) Mark’s Tarnish-Resistant. For the Tarnish-Resistant claim, we use an in-house method of immersion in a sulphide solution, combined with a corrosion resistance assessment based on ISO 9227. The sample must display no visible signs of tarnishing or deterioration.
This mark serves as a ‘proof of performance’ by validating that your product meets the HP Mark standards. You can display this mark on jewelry tags, gift boxes, websites, and marketing materials to confidently show shoppers that your products are verified.
