14K White gold alloy that will oxidize

Hi,

Does anyone know of a recipe for 14K White Gold alloy that will
oxidize like silver and be castable. I don’t know if using all
sterling silver as the alloy would work. Has anyone had any
experience with this?

Thanks,
HB

Nickel white will “fire stain” brownish purple. I have exploited
that quality of the metal to produce a deep, durable surface. It can
be tricky to get consistent. Heat to red, air cool and no flux.