From the ancient times when people discovered pearls, pearls were regarded as treasures. However, pearls have a certain life span, and yellowing is one of the manifestations of pearl aging. After a few decades, the pearl will slowly have a faint ordinary yellow color. There is no beautiful luster unique to the pearl when it is newly worn. This is a process of saying “the old man and the yellowâ€. Why does the pearl yellow? The main components of pearls are calcium carbonate and water, each of which contains more than 90% calcium carbonate and about 4% water. The calcium carbonate in the pearl body mainly exists in the form of aragonite, but the aragonite is unstable in nature. After a long time, the aragonite is easily converted into calcite. Although aragonite has the same chemical composition as calcite, the crystal habit and physical properties of aragonite are quite different from those of general calcite, which is the key reason for the yellowing of pearls. What if the pearl is yellow? After the pearl is slightly yellowed, it can be remedied by dilute hydrochloric acid soaking. Soak the pearls in 1%-5% dilute hydrochloric acid or hydrogen peroxide. As the foam is generated, the yellow outer shell of the pearl skin is dissolved, and the pearl is quickly taken out, washed with water, dried, and the pearl can be reproduced. But pay special attention, do not soak in dilute hydrochloric acid for too long, in case the pearl is damaged. If the color becomes very powerful, this method may not be applicable. This is a way to make the pearl repeat the luster. However, it takes a little time to dilute the hydrochloric acid. It is not a special person. It does not control the concentration of hydrochloric acid and the soaking time. This often results in damage to the skin of the pearl, even if it is changed. White, may also lose the original luster, not worth the candle. Therefore, it is recommended that you send the pearls back to the merchants you purchased at the time for maintenance and repair, so that professionals can handle them. In fact, if you pay attention to the maintenance of the pearl jewelry you wear in your daily life, the pearls will last for a long time. The yellowing will take about six to seventy years to a hundred years, if it is not the expensive one. It is estimated that everyone will not wear the same pearl jewelry for such a long time. How to maintain pearl jewelry in daily life? 1. When wearing: Avoid contact with acids, alkalis such as acid, vinegar, alcohol and perfume to prevent the pearl from fading or tarnishing. It is not advisable to wear too hard fabric to prevent scratching the skin of the pearl. Before the kitchen, the pearl should be taken off, and the surface of the pearl has fine pores. The adsorption of oil and soot may cause yellowing. 2. When not in use: Before putting it into the jewelry box, don't forget to use a flannel to wipe off the dust, sweat or grease left on the surface of the pearl. General formal merchants will provide professional pearl wiping cloth, the surface is delicate and soft, will not hurt the pearl, it is recommended not to use tap water or mineral water to wipe, because tap water contains chlorine, long-term contact with pearls also has a certain impact on gloss. Then put it in a velvet or silk jewelry box on the mat, not in a plastic bag or plastic box. Keep the pearl necklace in a cool place, try to avoid direct sunlight or place it in a dry place. So as not to dehydrate the pearls. It is not difficult to clean and maintain pearl jewelry. If you pay more attention to it, you can avoid the phenomenon that the pearl will turn yellow quickly, so that the pearl can maintain its brilliance and beauty for a long time. Complex Stitch Bond Fabeic,Customized Standard Stitch Bonded Fabrics,Unique Design Stitch Bonded Fabrics,Hot Sale Stitch Bonded Fabrics yizheng jiayu textile products co.,ltd , https://www.jystitchbond.com
