Jewelry Care Storage Store each piece separately, as harder gemstones such as diamonds and rubies, will scratch softer ones. Particular care should be taken with organics, as they are all extremely soft and liable to damage.  Jewelry should be kept in individual boxes, in compartments in a jewelry box, or wrapped in cloth or tissue paper. Care & Cleaning Check for loose stones before wearing or washing. Remove jewelry before doing any gardening or housework. Clean gems regularly using warm water and soap, or a diluted vinegar solution, unless specific instructions are given below. Dishwashing liquid is too harsh to use on organic gems. It should also be avoided with emeralds and rubies, since it will strip them of any oil that may have been applied. Never wear organic gems in swimming pools. Have antique jewelry professionally cleaned. Mineral gemstones Diamonds - Diamonds attract grease. Clean with toothbrush in warm water and soap or dishwashing liquid, or in alcohol. Opals - will dry out in plastic bags. Store these in humid surroundings. Organic gemstones Pearls - Restring pearls every two years. Pearls are damaged by perfume, hairspray, detergents, and perspiration. Apply perfumes or cosmetics before putting pearls on. Wipe with damp cloth after wearing.