珍珠的功效及保养
1、淡水珍珠含有结晶碳酸钙，有28种微量元素，如硒、锗等，他们都是防癌和抗衰老物质，对防治甲亢、慢性咽炎等疗效明显。珍珠的有效成份能被皮肤吸收，所以长期佩带有护肤、养颜、祛斑、消皱的功效。
2、珍珠首饰应避免与酸碱性物质及高温接触，也应避免与香水、发乳及油盐等直接接触，洗脸、洗澡时应取下，珍珠沾有汗水和污物时，用中性洗涤液稍加浸洗，用水冲净。用柔软的棉布拭去水份。不戴时放在珍珠盒内。
The efficacy and upkeep of pearls
1. The fresh pearl sotains crystalline calcium carbonate and 28 kinds of trace elements such as selenium and germanium,etc. They are all anticancer and anti-ageing substances, and have obvious curative effect in treating thyroidism and chromic pharygitis. The effective components of jpearls can be absorbed by the skin. So long time wearing has the efficacy of skin protection, compoexion murishment, spot removal and wrinkle elimination.
2. Pearl ornaments should avoid exposure to acid-alkali substances and high temperature. They should also avoid direct exposure to perfume, hair crem and oil and salt, etc.When you wash your face and take a bath, you should take them off. When the pearls are contaminated with sweat and dirt, use neutral cleaning mixture to rinse them and clean water to wash them clean. Then use a soft cotton cloth to wipe the water away.
淡水珍珠与海水珍珠的区别
1、淡水珍珠是淡水珍珠蚌外处膜薄膜衣细胞通过直接嫁接而成的，一般养殖两至三年，多则八九年至十多年，内部特征为同心放射趁层壮结构，可以生产珍珠美容系列，全成份速溶珍珠营养保健系列等，而海水珍珠内只用一个核，通过嫁接而成。
2、 淡水珍珠形状多样，大多是圆的，还有米形、半圆形、扁形、梨形，而海水珍珠只有圆的一种。
3、 淡水珍珠光泽度好，看起来珠光宝气，而海水珍珠光泽一般比较差。
Differences between fresh water pearls and sea waterpearls
1. The fresh water pearls cones from the direct grafting of thin membrane cells of the outer membrane of the fresh water pearls, usually through cultivation of 2～3 years, the longest cultivation period being 8～9 years or 10 years. It internal charcteristic is the concentric radiation-layer structure. Fresh water pearls can be used to produce pearl protection series, etc. However, only one stone from inside the pearl can be utilized throgh grafting.
2. Fresh water pearls come in many kinds of shapes, most of them being circular. There are also semic-circular, flat of pear-shaped. But the sea water pearls is only one of the circular shaped.
3. The glossiness of the fresh water pearls is good. It looks glittering, while the water pearl's glossiness is usually relatively poor.
淡水珍珠与仿珍珠、染色珍珠的鉴别
1、 将两颗珍珠对擦时，仿珍珠有滑感，真珍珠有涩感，将珍珠在玻璃上摩擦时，仿珍珠无条痕，真珍珠有珍珠粉条痕。真珍珠用刀轻轻地刮有珍珠粉，后用棉布或手拭去后感觉没有损坏珍珠。
2、 染色珍珠一般光泽比较差。看起来不自然，呈灰色和黑色，如用布沾一点5%稀硝酸擦洗，布上会有黑迹。
Disermination of fresh water and pearl imitation and dyed pearls
1. When rubbing two pearls againse each other, the pearl imitation feels slippery, while the real pearl feels unsmooth. When rubbing glass with pearls, the pearl imitation leaves no scratches, while the real pearl leaves scratches of pearl pewder. When the real pearls is slightly cut with a knife, it produces pearl powder. Then, after the powder is wiped off with cotton cloth or hand, you can feel that it is no damaged.
2. The dyed pearl's glossiness is usually relatively poor. It looks unnatural. It appears tray and black. If you use a cloth soaked with a little 5% thin nitric acid, the cloth will be stained with black stains.
怎样鉴别珍珠饰品好坏？
一串高质量的珍珠饰品，通常珠光饱满，光彩照人。光泽上要选择具有强烈珍珠光泽的，有内部反射光的感觉。不同颜色的珍珠，适应不同的肤色，珍珠的颜色主要有红白色稍带玫瑰、白色、金黄色、黑色带紫色的等，形状上一般选择圆度好，表面无瑕疵，颗粒上选择大的，加工工艺上选择造型美观大方，卡扣牢固的。我单位可以根据客户的要求设计，现场定做。
How to discriminate the goodness of pearl ornaments?
A string of high quality pearl ornament if normally full of glittering, and is shines with dazzling brilliance. For the sake of glossiness, you shoukd choose those with strong pearl gloss and with the feeling of internal reflected light. Pearls of different colors suit different skin colors. The main colors of pearls are red white color with a bit of rose,white color golden yellow color, black color with purple color, etc. In terms of shape, usually those good roundness and with no surface defects should be your choice. As for the size, you should select the big one(s). In the aspect of processing technology, you should select those with beautiful and dignified shape and with firm clasps and pins. Our unit can design and make to order on the spot according to the requirement of customer.