An 18-karat gold alloy consists of this percentage of gold
[DOC] [TLE] Gold Caratage | Gold Colours | Hallmarks | World Gold Council [PAR] Lower caratages contain less gold; 18 carat gold contains 75 per cent gold and 
25 ... Nickel-containing white gold alloys form a small/very small percentage of... [DOC] [TLE] Gold Jewelry Alloys, What's in Yellow and White Gold?