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Fine Jewelry University Articles matching: “Gtr mean”

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Fine Jewelry University

  1. Nickel in jewelry can cause allergic reactions

    What to Do When Your Ring Irritates Your Skin

    … to irritate someone after years of problem free wear. A change in diet, again, could also lead to irritation due to a change in the skin’s chemical composition. Adding to the confusion, metal allergies can develop at any age. This means that even if nothing changed it is possible to suddenly become allergic to jewelry that you have been wearing trouble free for many years. and reactions to metals can begin hours to days after contact and may last for several weeks. …

  2. Retipping is an important jewelry repair technique

    Jewelry Repair FAQ

    … containing chemically bound gold molecules and then using electricity to adhere those molecules to the jewelry’s surface. Molecules are the key to understanding gold plating. The amount of gold used is on the molecular level. This means that only a very thin layer of gold covers the surface. Gold plating produces a layer of gold around 0.5 microns thick. A micron is roughly equal to 4/100,000 or 0.00004 inches. Gold plated jewelry is often indicated with a “GP” marking…

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