Abstract: An alloy for use in jewelry applications is provided that has a composition comprising about 45 to about 55 platinum by weight and about 55 to about 45 percent palladium by weight. The alloy possesses favorable characteristics as compared to pure platinum and pure palladium. Due to these characteristics, the alloy is attractive for use in jewelry applications.

Abstract: An alloy for use in jewelry applications is provided that has a composition comprising about 45 to about 55 platinum by weight and about 55 to about 45 percent palladium by weight. The alloy possesses favorable characteristics as compared to pure platinum and pure palladium. Due to these characteristics, the alloy is attractive for use in jewelry applications.

Abstract: This invention relates to a tension ring capable of mounting a diamond or other gemstone by applying sufficient pressure to the girdle of the stone. The tension ring of this invention provides enough springiness and elasticity to maintain the pressure at the girdle of the stone under normal wear conditions, such as a snag or blow to the ring. The key aspect to the disclosed tension ring is the fusion of a cast component which provides the detail and polish with a cold worked component which provides springiness and elasticity to the ring. The benefit to a tension mount is that more incident light can strike the gemstone and enhance the natural brilliance and luster beyond other types of settings.