Patent ID: 6759134
Filing Date: 2004-07-06
Classification: A44C

Abstract:
A process of producing a jewelry having a luminous black surface, the process consisting essentially of the steps of:(a) processing an alloy into a workpiece having a jewelry structure; said alloy containing between about 51 and about 70 percent by weight of titanium, between about 3 and about 17 percent by weight of niobium and the balance of a metal selected from the group consisting of zirconium, tantalum, molybdenum, hafnium, vanadium, chromium, and combinations thereof, and (b) baking said workpiece in a kiln in a substantially air atmosphere at a temperature of between about 450 to about 850 degrees Centigrade for a period of between about 1 to about 29 minutes; whereby said jewelry having an ornamental luminous black surface is formed from the process.