Need a casting alloy to match "gauge crowns"

[SteveD]

I'm looking for a recommendation for a cast-able alloy to match some plate gold crowns. "22 carrot" I need to make a flipper with #8 in gold. #7,9,10 are plate. I really do not want to make this thing with out casting! Any help would be greatly appreciated.

 

[CatamountRob]

Are you looking for a 22 karat alloy? That's like 92% gold, or something close to that.

 

[SteveD]

I need to match the color of 22k. The gauge gold is Au-91.7%,Ag-5 %,Cu 2.8%