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  2. Chemical coloring of metals - Wikipedia

    en.wikipedia.org/wiki/Chemical_coloring_of_metals

    Brown or black can be used as a base color for copper patina. If the amount of chlorides decreases the color will be more bluish-green, if carbonate decreases, more yellow-green. [27] Black for copper. Solution of sodium polysulfide 2.5%, items must be submerged in the solution after color developing, wash, dry and wax or varnish colored object ...

  3. Black oxide - Wikipedia

    en.wikipedia.org/wiki/Black_oxide

    Black oxide or blackening is a conversion coating for ferrous materials, stainless steel, copper and copper based alloys, zinc, powdered metals, and silver solder. [1] It is used to add mild corrosion resistance, for appearance, and to minimize light reflection. [ 2 ]

  4. Marcasite jewellery - Wikipedia

    en.wikipedia.org/wiki/Marcasite_jewellery

    A similar-looking type of jewellery can be made from small pieces of cut steel. [3] [1] The cut and polished marcasite pieces reflect light at different angles from its different facets giving it a sparkle. [4] Thailand is one of the large producers of modern marcasite jewellery in silver. [citation needed]

  5. This Is Why Your Skin Turns Green After Wearing Certain Jewelry

    www.aol.com/why-skin-turns-green-wearing...

    Buy stainless steel or platinum jewelry, or jewelry made from precious metals like sterling silver or solid gold. Quince Bold 14k Gold Hoops Mejuri Wishbone Stacker Set

  6. Colored gold - Wikipedia

    en.wikipedia.org/wiki/Colored_gold

    Black gold is a type of gold used in jewelry. [13] [14] Black-colored gold can be produced by various methods: Patination by applying sulfur- and oxygen-containing compounds. Plasma-assisted chemical vapor deposition process involving amorphous carbon; Controlled oxidation of gold containing chromium or cobalt (e.g. 75% gold, 25% cobalt [3]).

  7. Stainless steel - Wikipedia

    en.wikipedia.org/wiki/Stainless_steel

    Stainless steel, also known as inox, corrosion-resistant steel (CRES), and rustless steel, is an alloy of iron that is resistant to rusting and corrosion. It contains iron with chromium and other elements such as molybdenum , carbon , nickel and nitrogen depending on its specific use and cost.

  8. Body piercing materials - Wikipedia

    en.wikipedia.org/wiki/Body_piercing_materials

    However, immune system reaction to nickel is a potential complication of 316.[1][2] Implants and equipment that are put under pressure (bone fixation screws, prostheses, body piercing jewelry) are made out of austenitic steel, often 316L and 316LVM compliant to ASTM F138,.[3] 316 surgical steel is used in the manufacture and handling of food ...

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!