| 摘要 |
PROBLEM TO BE SOLVED: To provide a sulfidization resistant silver alloy free from discoloration caused by sweat or the like even if being used for many years and moerover free from deterioration in brightness by adopting certain specified composition. SOLUTION: A compsn. composed of, by weight, 0.1 to 2.5% gold, 0.1 to 2.5% palladium, 0.1 to 5.0% indium, 0.1 to 3.0% tin, 0.1 to 2.0% copper, 0.1 to 1.5% platinum, and the balance silver is prepd. to control the whole ratio to 100 wt.%. As to this alloy, there is no problems in workability even if being worked as accessories such as fingerrings, broaches and pendants.
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