Add a few drops of a mild dishwashing liquid in two cups of warm water. Mix it well and soak your jewellery piece in this solution for 15 minutes. Gently scrub the item with a soft-bristled tooth brush until the shine is back. Thoroughly rinse with warm water and dry with soft cloth.
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Make a solution of ammonia and water, mixing ¼ cup of ammonia in one cup of warm water. Place your diamond jewellery piece in this solution for 15 to 20 minutes. Remove it from the solution and gently scrub the areas between the diamond and the setting with a soft toothbrush. Rinse thoroughly under running tap water and put it out on a tissue to dry.
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Mix a few drops of mild dishwashing powder in two cups of warm water. Dip a clean cotton cloth in this mixture and dab each pearl individually. Never dip your pearl jewellery in the cleaning solution, as it can cause the string to stretch. After having cleaned all the pearls, clean them with a soft cloth dampened in warm tap water. Let the cleaned jewellery item air-dry overnight.
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Mix one cup of water and one teaspoon of some weak acid, like distilled vinegar. Soak your tarnished copper jewellery in this mixture for few minutes and then rub with a soft brush until all traces of grime are gone. Finally wash it under running water and dry it using tissue paper.
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