Answers

2015-09-23T06:35:54+05:30
Gold,Silver,Platinum. Because, these are three major hardest metals ever to be found on earth.If other metals were used it would easily get bended.
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2015-09-23T13:26:54+05:30
The most commonly used metals used for making jewellary are gold, silver and platinum. Gold, silver and platinum are noble metals. They are very less reactive. As a result, rarely corrosion occurs and hence do not loose their lusture or shine for a long time. 

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