Vickers Hardness of Precious Metals

Rhodium (plating)	800 HV
14k White Gold	230 HV
18k White Gold	210 HV
18k Yellow Gold	155 HV
14k Yellow Gold	140 HV
14k Rose Gold	140 HV
Palladium	130 HV
Platinum	125 HV
Sterling Silver	75 HV

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