Jewellery alloys

Details Jewellery alloys Jewellery alloys

C - Chemistry, Metallurgy

22

C

75/96

C22C 5/04 (2006.01)

Patent

CA 1096205

ABSTRACT OF DISCLOSURE. An alloy suitable for use in the fabrication of jewellery containing at least 95% by weight platinum and 1.5 to 3.5% by weight gallium, the balance being at least one of indium, gold, palladium, silver, copper, cobalt, nickel, ruthenium, iridium and rhodium. A Ga/Au/Pt alloy is preferred for ornamental application, and a Ga/In/Pt possibly including gold, silver or palladium is preferred for use in the manufacture of springs and clasps. Alloys are described which comply with hallmarking requirements but yet casting may be effected more easily than with pure platinum. -1-

297615

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