Progold S.p.a. – Lux276

Developed as a tarnish-resistance solution for jewelry manufacturing, Lux276 is a ready-to-use silver alloy that is made from 100 percent certified recycled silver. It is designed to provide long-lasting tarnish resistance without galvanic treatments and avoids the use of expensive elements such as palladium or platinum. Capable of reaching up to 105HV after hardening, the alloy supports both efficient mass production and high-quality jewelry manufacturing. It is formulated to reduce impurities, improve mold filling, and minimize porosity, resulting in cleaner surfaces and fewer defects. The alloy is certified under both RJC CoC and CoP standards.