Summer wear jewelry to pay attention to maintenance As people living standard rise, wearing a gem is not easy, but as the weather turned hot, afraid of sweat jewelry are going to have to regular maintenance. Evening news collection tasting committee qing-feng song remind everybody, in the summer wear jewelry must pay attention to maintenance, especially the organic gemstones such as pearls, coral, more should be more careful. Pearl is organic gemstones, so it is afraid of sweat. After the sweat soaked, the surface of pearl will send dirty, glossiness is affected, even sometimes also needs to be polished, pearl also can't contact with acidic or alkaline liquid, so you couldn't wear in the shower, more can't use hot water to rinse pearl, pearl is very soft, be afraid of, so to avoid contact with metal hard objects, in the process of daily maintenance, can use very soft cotton cloth to wipe. Besides pearl afraid sweat, and coral, malachite afraid of acid and alkali of gems are all afraid of sweat, it have direct relationship with the chemical composition of gem itself. Coral is the main component of calcium carbonate, and there are acid in sweat, and coral imitation cartier love bracelet hardness is low, it is easy to react. Malachite is alkali type copper carbonate, it also afraid of sweat, mostly carbonated jewelry are afraid of erosion of sweat. Malachite and turquoise hardness is low, it is easy to wear and tear, due to the instability of chemistry, corrosion will dissolve in acid. The turquoise after long time exposure and sweat soaked, color change happens. Turquoise also has the water absorbability, can absorb oil, so when the skin sunscreen, lotion after makeup, don't wear turquoise jewelry. Touch, play with jade jewelry is a lot of Tibetan friend hobby, even has already formed a habit, that is largely because, jade belongs to the aggregate structure, often play with, and you'll probably make more delicate jade jade. But some jewelry alone can't contact with sweat, and, of course also cannot be used as a plaything to keep play. Touch stone, oil, sweat of hands easily stick to the gem, thus affect the luster of the gem. Gems, such as diamond also belong to hydrophilic surface easily infected with grease, affect the luster of diamonds. Correct understanding of common white precious metals Pure platinum is more soft, ruthenium, rhodium and palladium metal will increase its hardness. South American indians made platinum jewelry as early as before the 15th century, did not start until after the middle of the 19th century Europe, now Japan's biggest consumer of platinum. RHODIUM (old), RHODIUM, derived from rhodon, meaning "rose", because the RHODIUM salt solution present rose pink color, discovered in 1803. In addition to manufacturing alloy, rhodium can be used for other metals of light and hard coating, for example, in silver plating or camera parts. Rhodium evaporation to the glass surface, forming a thin layer of wax, which caused a special excellent reflection mirror. White Gold: (White Gold) The K white gold, platinum, on the market is a kind of gold, nickel, copper, zinc alloy. Or gold and silver, or gold, silver and copper alloy. Also including Taiwan master often use of gold and palladium alloy. Its code WG (WhiteGold), that is, the meaning of white gold. Early in 226 gold (6, 2, palladium and copper (2) to represent contains 600/1000 of the pure white gold, also known as "material", means with gold and silver metal, rather than do not contain Cartier love bracelet replica nickel alloy (nicklealloy) of gold plating. General foreign stamps are commonly used; WG585 (14 k), WG750 (18 k) or just Numbers represent value. Have good reflective white gold, and not easy to lose luster, mainly used as jewelry with diamond, hallow stones etc. Platinum (Platinum) Also known as white gold, is or true platinum. But some of the call is not reasonable, and easily confused with white gold. Its symbol is the Pt, silver grey white, specific gravity 21.35, melting point 1700 ℃, mohs hardness 4-4.5 degrees, chemical stability, not affected by acid and alkali corrosion besides aqua regia. Pure platinum is more soft, ruthenium, rhodium and palladium metal will increase its hardness. South American indians made platinum jewelry as early as before the 15th century, did not start until after the middle of the 19th century Europe, now Japan's biggest consumer of platinum. Platinum alloy (Platinumalloy) Refers to the mixture of platinum and other metal alloy, such as with palladium, rhodium, yttrium, ruthenium, copper, cobalt, osmium, etc. Although platinum than high hardness, but it is not enough for the use of set hallow, necessary and other metal alloys, can be used to make jewelry. Jewellery using platinum and platinum, iridium, ruthenium alloy is more. In Europe and Hong Kong using platinum, cobalt alloy in the casting. With platinum in Japan (85%), and palladium alloy smelting. Platinum is the stamp act the role of Pt, platt international or Platinum, and the purity of replica Cartier love bracelet  representative of QianFenShu word, such as Pt900 said purity is 900% %. In Japan, the specifications of the platinum jewelry Pt1000 are marked, Pt950 Pt900 Pt850. Palladium (palladium) Is a member of the platinum, silver, Pd, the proportion of 12, lighter than platinum, good extension, a little hard than platinum, does not dissolve in the organic acid, sulfuric acid or hydrochloric acid. But soluble in nitric acid and aqua regia. Not easy oxidation and lose luster, under normal temperature about 400 ℃ can produce oxide surface, but when the temperature rise to 900 ℃ and restore luster. Now is much cheaper than platinum and palladium, jewelry industry used alone, or as part of the gold, silver, platinum alloy. Sometimes involved in some ruthenium, to increase its hardness. On the market the common gold, K gold and platinum, palladium and palladium alloy. Specifications are marked Pd1000, Pd950, Pd900 To compare The difference between K platinum and platinum 1, pure refers to the amount of 99.9% pure gold jewelry, metal printing engraved with 999 pure gold or word. 2, pure refers to the pure gold jewelry of gold content of 99%, with 99% or jewellery. 3 refers to contain ingredients 75% gold, 18 k gold jewelry, the remaining 25% for other precious metals, engraved with 18 k or 750 mark. 4, 18 k platinum refers to contain 75% gold ingredients, color to white gold Cartier love bracelet replica ornaments, the remaining 25% for other white yellow metal, engraved with 18 k or 750 mark. 5, Pt900 refers to contain 90% platinum, the remaining 10% for other precious metals, platinum, palladium content reached 950% platinum jewelry, mark for Pt900. 6, Pt950 refers to contain ingredients 95% platinum jewelry, the remaining 5% for other precious metals, mark for Pt950. 7, metal composition is not the same, chemical element on the table, one is the gold, platinum.