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2. Jewelry wire - Wikipedia

   en.wikipedia.org/wiki/Jewelry_wire

   Jewelry wire is wire, usually copper, brass, nickel, aluminium, silver, or gold, used in jewelry making. Wire is defined today as a single, usually cylindrical, elongated strand of drawn metal. However, when wire was first invented over 2,000 years BC, it was made from gold nuggets pounded into flat sheets, which were then cut into strips. The ...

3. Gold-filled jewelry - Wikipedia

   en.wikipedia.org/wiki/Gold-filled_jewelry

   Gold-filled material is used to create a variety of products, including: Jewelry: Gold-filled is a popular choice for jewelry because it's durable, affordable, and hypoallergenic. Findings and components: Gold-filled is also used to make jewelry findings (e.g., clasps, jump rings) and other components.

4. Titanium nitride - Wikipedia

   en.wikipedia.org/wiki/Titanium_nitride

   Because of the metallic gold color of TiN, this material is used to coat costume jewelry and automotive trim for decorative purposes. TiN is also widely used as a top-layer coating, usually with nickel- or chromium-plated substrates, on consumer plumbing fixtures and door hardware.

5. Gold plating - Wikipedia

   en.wikipedia.org/wiki/Gold_plating

   Gold plated - gold layer thickness greater than or equal to 0.5 micron; Heavy gold plated / Vermeil - gold layer thickness greater than or equal to 2.5 micron; Gold plated silver jewellery can still tarnish as the silver atoms diffuse into the gold layer, causing slow gradual fading of its color and eventually causing tarnishing of the surface ...

6. Tinning - Wikipedia

   en.wikipedia.org/wiki/Tinning

   Hot tin-dipping is the process of immersing a part into a bath of pure molten tin at a temperature greater than 450 °F or 232 °C. Tinplate made via hot-dipped tin plating is made by cold rolling steel or iron, pickling to remove any scale, annealing to remove any strain hardening, and then coating it with a thin layer of tin.

7. Jewellery - Wikipedia

   en.wikipedia.org/wiki/Jewellery

   Some jewellery is plated to give it a shiny, reflective look or to achieve a desired colour. Sterling silver jewellery may be plated with a thin layer of 0.999 fine silver (a process known as flashing) or plated with rhodium or gold. Base metal costume jewellery may also be plated with silver, gold, or rhodium for a more attractive finish.