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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. Chaser's pitch - Wikipedia

    en.wikipedia.org/wiki/Chaser's_pitch

    A heat gun is a preferred way to heat up the pitch (and, if necessary, the metal object). A powerful hair dryer could also work. A blow torch as used by plumbers may also be used, although it creates a fire hazard since the pitch (and any vapors it may release when hot) are flammable.

  4. Electropolishing - Wikipedia

    en.wikipedia.org/wiki/Electropolishing

    Electropolishing, also known as electrochemical polishing, anodic polishing, or electrolytic polishing (especially in the metallography field), is an electrochemical process that removes material from a metallic workpiece, reducing the surface roughness by levelling micro-peaks and valleys, improving the surface finish.

  5. Polishing (metalworking) - Wikipedia

    en.wikipedia.org/wiki/Polishing_(metalworking)

    While used less extensively than traditional mechanical polishing, electropolishing is an alternative form of polishing that uses the principles of electrochemistry to remove microscopic layers of metal from a base surface. [3] This method of polishing can be fine-tuned to give a wide range of finishes, from matte to mirror-bright.

  6. Diamond tool - Wikipedia

    en.wikipedia.org/wiki/Diamond_tool

    An example of this kind of tool is the resin-bonded diamond polishing pads used in the construction industry. Plated diamond tools: These tools are made by fixing the diamonds onto the tool's base via electroplating method or via CVD (Chemical Vapor Deposition) method. They can usually be made to good processing precision.

  7. Goldsmith - Wikipedia

    en.wikipedia.org/wiki/Goldsmith

    The Baqdadi goldsmith by Kamal-ol-molk. A goldsmith is a metalworker who specializes in working with gold and other precious metals.Modern goldsmiths mainly specialize in jewelry-making but historically, they have also made silverware, platters, goblets, decorative and serviceable utensils, and ceremonial or religious items.

  8. Gold-filled jewelry - Wikipedia

    en.wikipedia.org/wiki/Gold-filled_jewelry

    This abbreviation is incompatible with FTC guidelines, which require clear labeling of the gold content and fineness (e.g., 1/20 14K GF). [3] Most high quality gold-filled pieces have the same appearance as high carat gold, and gold-filled items, even with daily wear, can last 10 to 30 years though the layer of gold will eventually wear off ...

  9. Iron(III) oxide - Wikipedia

    en.wikipedia.org/wiki/Iron(III)_oxide

    When polishing gold, the rouge slightly stains the gold, which contributes to the appearance of the finished piece. Rouge is sold as a powder, paste, laced on polishing cloths, or solid bar (with a wax or grease binder). Other polishing compounds are also often called "rouge", even when they do not contain iron oxide.

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