Multi-coated metallic products and methods of making the same

A method for producing a two layer coated jewelry article or a two layer coated component of a jewelry article, the method comprising:

• providing a jewelry article or a component of a jewelry article;
• subjecting the jewelry article or the component of the jewelry article to a first layering process to obtain a first coated jewelry article or a first coated component of a jewelry article comprising a first coating wherein the first coating is selected from at least one of the following:
• tungsten carbide, cobalt, tungsten, titanium, zirconium, tantalum, iron, cobalt chrome, cobalt chromium, nitinol, aluminum, aluminum carbide, vanadium, ruthenium, brass, bronze, zinc, German silver, niobium, molybdenum, hafnium, rhenium, chromium carbide, cobalt chrome molybdenum, stainless steel, 18-8 stainless steel, 304 stainless steel, 316 stainless steel;
• and
• subjecting the first coated jewelry article or the first coated component of the jewelry article to a second layering process to obtain the two layer coated jewelry article or the two layer coated component of the jewelry article comprising a second coating
• wherein the two layer coated jewelry article or the two layer coated component of the jewelry article consists of the jewelry article or the component of the jewelry article, the second coating, and the first coating interposed therebetween.

A method for making a jewelry ring consisting of a substrate, a first coating of a metal, a material having metallic properties, a metal compound, a metallic compound, or a metal alloy, and an external coating, the method comprising:

• at least one of cutting, pressing, molding, casting, striking, extruding, sintering and shaping the substrate into a ring shape;
• depositing the first coating over the substrate;
• and
• depositing the external coating over the first coating,
• wherein the external coating is selected from at least one of the items from at least one of the following groups:
• (a) zirconium nitride (ZrN), chromium-titanium nitride (CrTiN), aluminum-titanium nitride (AITiN), aluminum-titanium-chromium nitride (AITiCrN), tungsten nitride (WN), tungsten carbide, tungsten, zirconium, cobalt chrome, cobalt chromium, nitinol, aluminum, aluminum carbide, vanadium, copper, brass, bronze, tungsten copper, zinc, tin, German silver, niobium, molybdenum, hafnium, rhenium, chromium, a steel alloy, silver nitride, aluminum nitride, vanadium nitride, tantalum nitride, chromium carbide, zirconium carbide, tantalum carbide, and cobalt chrome molybdenum, or
• (b) cobalt, tantalum, iron and nickel, but excluding gold.

A method for producing a two layer coated jewelry article or a two layer coated component of a jewelry article, the method comprising:

• providing a jewelry article or a component of a jewelry article, wherein the jewelry article or the component of the jewelry article comprising tungsten carbide;
• subjecting the jewelry article or the component of the jewelry article to a first layering process to obtain a first coated jewelry article or a first coated component of a jewelry article comprising a first coating;
• and
• subjecting the first coated jewelry article or the first coated component of the jewelry article to a second layering process to obtain the two layer coated jewelry article or the two layer coated component of the jewelry article comprising a second coating, wherein the second coating is selected from at least one of the items from at least one of the following groups:
• (a) zirconium nitride (ZrN), chromium-titanium nitride (CrTiN), aluminum-titanium nitride (AITiN), aluminum-titanium-chromium nitride (AITiCrN), tungsten nitride (WN), tungsten carbide, tungsten, zirconium, cobalt chrome, cobalt chromium, nitinol, aluminum, aluminum carbide, vanadium, copper, brass, bronze, tungsten copper, zinc, tin, German silver, niobium, molybdenum, hafnium, rhenium, chromium, a steel alloy, silver nitride, aluminum nitride, vanadium nitride, tantalum nitride, chromium carbide, zirconium carbide, tantalum carbide, and cobalt chrome molybdenum, or
• (b) cobalt, tantalum, iron and nickel, but excluding gold, and
• wherein the two layer coated jewelry article or the two layer coated component of the jewelry article consists of the jewelry article or the component of the jewelry article, the second coating, and the first coating interposed therebetween.