Tips For Maintaining Pearl Jewelry
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Pearl is very beautiful, but with the uniqueness. It needs us to pay special attention to maintain.
Low hardness is the first shortcoming of pearl. Its Mohs scale is only about 3.5, is far lower than glass. So, it's easy to cut by hard things, such as iron, glass, etc. Its luster is also easy to be worn off by dust.
The property of precious stone is more stable, such as diamonds, rubies, sapphires, etc. In the abstract, the property of gemstone will not change even after tens of thousands of years.
However, the pearl is just the opposite. We know that the major component of pearl is aragonites, aragonite is an unstable mineral, and it has an automatic tendency to changes into another mine calcite. When that happens, the pearl turn yellow and lose its beautiful pearly luster, and it's an irreversible process. This has resulted in an old Chinese saying goes "Men grow old, peals grow yellow", which means there's no way out.
The Jade and precious stones from over ten thousand years ago, often can be retained completely until now, but it can be difficult to see a antique of pearl from thousand years ago. The reason, I'm afraid that it is related to the characteristic of pearl which its major component aragonites can be automatically changes into calcite.
Aragonites, the major component of pearl, its chemical component is calcium carbonate, exactly the same with white marble and marble which with the use of stones in the construction. The chemical property is very unstable, it is very easy to dissolves in acid, and even acetic acid can eat through the chemical property. At the same time, it's better to keep it away from cosmetics, oil, alcohol, gasoline, vinegar, sauce, and sweat, all of these can eat the surface of pearl and tends to luster deterioration, or make the pearl paint with stains. Due to often contact with the skin, when not in use, the pearl necklace, or pearl should be washed with neutral detergent, clean the oil dirties on it, rinse with water, and then dry.
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by: pinkpig
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