PIECE OF JEWELRY

Abstract

A piece of jewelry having a copper-containing gold alloy consists of 58.5 to 58.7 wt. % gold, 26.9 to 32.6 wt. % copper, 5.7 to 10.7 wt. % silver, 1.0 to 3.0 wt. % palladium, and a remainder containing 0.7 to 2.2 wt. % zinc.

Claims

1. A jewelry body made of a copper-containing gold alloy, wherein the gold alloy consists of 58. 5 to 58.7 wt. % gold, 26.9 to 32.6 wt. % copper, 5.7 to 10.7 wt. % silver, 1.0 to 3.0 wt. % palladium, and a balance having 0.7 to 2.2 wt. % zinc.

2. The jewelry body according to claim 1, wherein the gold alloy consists of 58. 6 wt. % gold, 29.0 to 29.5 wt. % copper, 8.5 to 9.0 wt. % silver, 1.9 to 2.1 wt. % palladium, and a balance having 1.4 and 1.5 wt. % zinc.

3. A jewelry alloy for manufacturing the jewelry body according to claim 1.

4. A method for manufacturing the jewelry alloy according to claim 3, wherein the zinc content is obtained by melting brass together with the other constituents.

5. The manufacturing method according to claim 4, wherein the brass in the form of CuZn37 is melted.

6. The manufacturing method according to claim 4, wherein, after its manufacture, the melt is cast by hand.

7. The manufacturing method according to claim 4, wherein, after its manufacture, the melt is supplied to a continuous casting method.

8. A jewelry alloy for manufacturing the jewelry body according to claim 2.

9. The manufacturing method according to claim 5, wherein, after its manufacture, the melt is cast by hand.

10. The manufacturing method according to claim 5, wherein, after its manufacture, the melt is supplied to a continuous casting method.

Description

EXAMPLE

[0012] 58.6 wt. % gold, [0013] 26.7 wt. % copper, [0014] 8.7 wt. % silver, [0015] 2.0 wt. % palladium, [0016] 4.0 wt. % CuZn37 brass