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  2. Jewellery cleaning - Wikipedia

    en.wikipedia.org/wiki/Jewellery_cleaning

    The cleaner would first inspect the jewelry to ensure that the gemstones are accounted for and secured. Materials that can handle it are often placed in an ultrasonic bath using a cleaning solution and later put through a steam cleaner, while more sensitive materials will go through light brushing in soapy water.

  3. Vitreous enamel - Wikipedia

    en.wikipedia.org/wiki/Vitreous_enamel

    The powder melts, flows, and then hardens to a smooth, durable vitreous coating. The word vitreous comes from the Latin vitreus, meaning "glassy". Enamel can be used on metal, glass, ceramics, stone, or any material that will withstand the fusing temperature. In technical terms fired enamelware is an integrated layered composite of glass and ...

  4. Rotten stone - Wikipedia

    en.wikipedia.org/wiki/Rotten_stone

    Rotten stone is sometimes used to buff stains out of wood. Some polishing waxes contain powdered rotten stone in a paste substrate. For larger polishing jobs, rotten stone mixed with a binder is applied to polishing wheels. It has also been used to polish brass, such as that found on military uniforms, as well as steel and other metals.

  5. Conservation and restoration of lacquerware - Wikipedia

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

    Wet cleaning is the process of further removal of dirt, grime and residue from the surface of the object that is not successfully removed by dry cleaning. Testing of various solvents should be done prior to wet cleaning the surface of the object in order to prevent possible damage to or removal of the original lacquer surface. [ 16 ]

  6. Jet (gemstone) - Wikipedia

    en.wikipedia.org/wiki/Jet_(gemstone)

    Jet is around 75% carbon and 12% oxygen with sulfur and hydrogen making up most of the balance. [7] Other elements are found at trace level and the exact ratios varying with the source; for example, Spanish jet contains more sulfur than Whitby jet. [7] Jet has a Mohs hardness ranging between 2.5 and 4 and a specific gravity of 1.30 to 1.34.

  7. 6 Best Vibration Plates to Amplify Your Workouts and Recovery

    www.aol.com/6-best-vibration-plates-amplify...

    Oscillating plates rock from side to side, for a gentler sensation, while tri-plates vibrate up and down, side to side, and front to back. Some, more simple vibration plates also have a linear or ...