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  2. Jewellery cleaning - Wikipedia

    en.wikipedia.org/wiki/Jewellery_cleaning

    Jewelry with gemstones such as diamonds or sapphires can be cleaned at home as well using mild soap and warm water. However, gemstones such as opals and pearls should be done professionally. Another issue is the age of jewelry, as certain materials or build strategies of older jewelry (such as from the Georgian era ) may have restrictions, such ...

  3. Glamorous gold jewelry staples you can wear on repeat — all ...

    www.aol.com/lifestyle/glamorous-gold-jewelry...

    Wear it alone or layered with your other favorite pieces — there's no wrong way to style this 14k gold-plated, tarnish-resistant necklace. "You just can’t beat the price of this necklace.

  4. Black Hills gold jewelry - Wikipedia

    en.wikipedia.org/wiki/Black_Hills_gold_jewelry

    Black Hills gold jewelry is a type of jewelry manufactured in the Black Hills of South Dakota. It was first created in the 1870s during the Black Hills Gold Rush by a French goldsmith named Henri LeBeau, who is said to have dreamed about the design after passing out from thirst and starvation.

  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. Gold-filled jewelry - Wikipedia

    en.wikipedia.org/wiki/Gold-filled_jewelry

    The Federal Trade Commission allows the use of the terms "rolled gold plate," "R.G.P" or "gold overlay" on items with lower thicknesses of gold than are required for "gold-filled." [ 3 ] An example would be an item stamped as " 1 ⁄ 40 10kt RGP" meaning that the object is plated with 10kt gold at a thickness that makes weight of the plated ...

  7. Tarnish - Wikipedia

    en.wikipedia.org/wiki/Tarnish

    Unlike wear patina necessary in applications such as copper roofing, outdoor copper, bronze, and brass statues and fittings, chemical patina is considered a lot more uneven and undesirable. [2] Patina is the name given to tarnish on copper-based metals, while toning is a term for the type of tarnish which forms on coins.

  8. Jewelry hygiene - Wikipedia

    en.wikipedia.org/wiki/Jewelry_hygiene

    Jewelry hygiene is an area of study focusing on sanitary practices and habits relating to jewelry in an effort to understand jewelry's effect on hand hygiene. There are four key elements to optimally sanitizing jewelry: steam or hot water, water pressure and an antibacterial cleaning agent.

  9. Conservation and restoration of silver objects - Wikipedia

    en.wikipedia.org/wiki/Conservation_and...

    Whether silver plating or pure silver, the composite of the metal will tarnish when exposed to air and sulfur. Tarnish is a chemical reaction on the surface of metal (copper, brass, silver, etc.) and causes a layer of corrosion. In the case of silver tarnish, the silver combines with sulfur and forms silver sulfide (Ag 2 S), which is

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