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  2. How to Clean All the Rings in Your Jewelry Box, From Silver ...

    www.aol.com/clean-rings-jewelry-box-silver...

    Be it a classic gold signet band, a sparkling diamond engagement ring, or a fun piece of costume jewelry, rings have a lot to say about the wearer and their personal style. Keeping them clean and ...

  3. Jewellery cleaning - Wikipedia

    en.wikipedia.org/wiki/Jewellery_cleaning

    Keeping your jewelry clean gives the gemstone(s) a good shiny appearance by removing dirt and grease (among others) from loosening them. Dirty jewelry may also cause skin irritation. [1] A professional cleaning may take anywhere from a few minutes to a few days depending on the circumstances.

  4. Here's How to Clean Your Engagement Ring at Home - AOL

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  5. Piranha solution - Wikipedia

    en.wikipedia.org/wiki/Piranha_solution

    In the laboratory, this solution is sometimes used to clean glassware, though it is discouraged in many institutions and it should not be used routinely due to its dangers. [10] Unlike chromic acid solutions, piranha does not contaminate glassware with Cr 3+ ions. Piranha solution is particularly useful when cleaning sintered (or "fritted ...

  6. Diamond (gemstone) - Wikipedia

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

    A diamond with facets cut only a few degrees out of alignment can result in a poorly performing stone. For a round brilliant cut, there is a balance between "brilliance" and "fire". When a diamond is cut for too much "fire", it looks like a cubic zirconia, which gives off much more "fire" than real diamond. A well-executed round brilliant cut ...

  7. Conservation and restoration of silver objects - Wikipedia

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

    Single Ingredient – Toothpaste is applied with a clean cloth as a gentle abrasive with a soft bristle toothbrush and rinsed in water. [16] Boiling Water Bath – The silver object or pieces are placed into an aluminum pot and covered with water. One tablespoon of salt and baking soda is added and boiled for three minutes. After cooling, the ...

  8. Liquid nitrogen wash - Wikipedia

    en.wikipedia.org/wiki/Liquid_nitrogen_wash

    Addition of the required stoichiometric amount of nitrogen to the hydrogen stream to achieve the correct ammonia synthesis gas ratio of hydrogen to nitrogen of 3 : 1; The carbon monoxide must be removed completely from the synthesis gas (i.e. syngas) since it is poisonous for the sensitive ammonia synthesis catalyst. [4]

  9. Mega-ammonia project could position Louisiana as clean ... - AOL

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    (The Center Square) – A proposed $7.5 billion ammonia production facility in Ascension Parish could position Louisiana as a global leader in clean energy. "It would be the largest [ammonia ...