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  2. Conservation and restoration of silver objects - Wikipedia

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

    With the creation of hand-made silver objects, the issue of cleaning and caring for these items was a concern. Silversmiths would give advice to clients on how to properly care for their silver. Here are examples of instructions given by silversmiths in the 17th and 18th centuries.

  3. Jewellery cleaning - Wikipedia

    en.wikipedia.org/wiki/Jewellery_cleaning

    Ultrasonic cleaner showing the removable basket in place, and a closeup of the light and timer Ultrasonic cleaners are useful for jewelry cleaning and removing tarnish. They use ultrasound waves and chemicals combined to create bubbles that "cling" to the foreign particles such as dirt, oil, and unknown substances.

  4. Cleaning agent - Wikipedia

    en.wikipedia.org/wiki/Cleaning_agent

    Silver cleaning is a specialty since silver is noble but tends to tarnish via formation of black silver sulfide, which is removable via silver-specific complexants such as thiourea. Stainless steel, nickel, and chromium cleaners contain lactic, citric, or phosphoric acid. A solvent (mineral spirits) may be added.

  5. In central Idaho, the Triumph Mine produced silver, lead, and zinc from the late 1800s into the 1950s. But since shuttering operations decades ago, the mine has been an environmental hazard, with ...

  6. Brasso - Wikipedia

    en.wikipedia.org/wiki/Brasso

    Brasso has also been used to polish out scratches in plastics: It has been used to polish CDs, DVDs, screens, and pools to repair scratches. It is a mild solvent and an extremely fine abrasive, so when applied to the reflective surface of the disc and rubbed radially (in straight lines between the edge and centre), it can smooth scratches and reduce their effect.

  7. Frankfurt silver inscription - Wikipedia

    en.wikipedia.org/wiki/Frankfurt_silver_inscription

    The Frankfurt silver inscription is an 18-line Latin engraving on a piece of silver foil, housed in a protective amulet dating to the mid-3rd century AD. Due to its reference to Jesus Christ , it represents the oldest known evidence of Christianity north of the Alps . [ 2 ]

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