Copper-silver-gold alloy, formed therefrom shaped body of a goldsmith and / or jewelry workpiece and use of the alloy as a goldsmith material

摘要

In a goldsmith and / or jewelry piece a solution should be created for its production, which allows goldsmith and / or jewelry workpieces from a continuously colored, especially yellow or rose-colored, and tarnish-resistant copper-silver-gold alloy without Demixing phenomena and with good ductility. This is achieved by a goldsmith and / or jewelry workpiece comprising one of at least 35 wt .-% silver, in particular at least 40 wt .-% silver and at most 60 wt .-% silver, preferably 40 wt .-% - 50 wt. -% silver, and 1.2-1.3 wt .-% germanium, in particular 1.25 wt .-% germanium, as well as 1.0 - 15 wt .-% zinc-containing, tarnish-protected copper-silver-gold alloy produced moldings.