A tarnish resistant silvery alloy, comprises Silver at least about 92.7% by weight; Gold at least about 0.15% by weight; Platinum at least about 0.15% by weight; Palladium at least about 2.5% by weight; and an alloy (S925PT) (7% Zinc & 93% Copper) at least about 4.5% by weight.
[Class : 14] Precious Metals And Their Alloys And Precious Stones Or Coated Therewith And In General Jewellery, Clocks And Watches, Imitation Jewellery, Horological And Chronometric Instruments.