Since the global financial crisis since the outbreak, gold will become the capital market the most dazzling "star". In other types of financial investment goods is still in "healing", gold prices are like a runaway horse, all the way up, often refresh an all-time high, "crazy" gold to get the global investors trying to chase after hold in both hands, gold and silver jewelry into selling season. Gold and silver ornaments belongs to the precious metal jewelry, usually refers to gold, silver, platinum, palladium as the main component of the jewelry. These precious metal elements in the earth content rare, scattered distribution, mining complex, the price is expensive. With gold, for example, to get 1 gram of gold mining, need nearly 1 tons of ore; To platinum as an example, each purification 1 ounce platinum, need to mining 10 tons of ore. In our market, the types of gold jewelry mainly thousand pure gold, pure gold. Recent market and makers offer all pure gold. Consumers often mentioned "24 k gold", the domestic no longer use, generally belong to foreign back to products, not pure gold. The national standard "jewelry metal purity rules and naming methods GB11887-2008" in regulation, gold jewelry products gold content is equal to or greater than 990 ‰ were known as pure gold, gold content is equal to or greater than 999 ‰ were known as thousand pure gold. Platinum jewelry is a platinum as the main raw material made from jewelry, because "platinum" by "gold" and "white" two words composition, color and white, it is also called the "platinum". The market is mainly millipede platinum (Pt999), foot platinum (Pt990), platinum 950 and platinum jewelry 900 varieties. Palladium jewelry is palladium as the main raw material made from jewelry, its color also is white, its density is relatively small, so hand phase modulation is lighter. Jewelry varieties are mainly millipede palladium (Pd999), foot palladium (Pd990) and palladium 950. Platinum jewelry, palladium jewelry, with white and k funding for white, although on the surface does not have what distinction, but main material completely different, platinum jewelry main material for platinum (Pt), palladium jewelry main material for palladium (Pd), and white and k gold main material for content 75% of gold, does not contain the platinum (Pt) and palladium (Pd), so the price difference is very big also. Consumer is buying white metal jewelry to clear platinum (Pt), palladium (Pd) and white and k gold difference, in the invoice and guarantee, etc on the bill will mark clearly. Appearance quality: because it is a high grade adorn article, precious metal jewelry appearance quality is very important. Adorn article to overall modelling beautiful, designs image nature, rational layout, line is clear. Act the role ofing is tasted the surface should be clean, no file, blow, hammer processing trace, no burr, blister, porosity, crack and dirty and obvious processing defects; Adorn article surface treatment plating color consistent, bright without watermarks. Chain accessories should pay special attention to the welding is strong, and presence of virtual welding, leakage welding and obvious welding scar. Inspection welding quality fit and unfit quality, often by looking at the back of the jewelry to judge. Act the role of tasted elastic parts should be agile, powerful. Jewelry door head, niv ring should use elastic parts, elastic accessories material generally USES and k gold good elasticity. Mark: should be carefully observed jewelry identification, pay attention to whether and sales label brand and sales invoice express agreement. Each piece of gold and silver jewelry should have identification. According to the gold and silver jewelry identification management regulations, gold and silver jewelry identification shall include the following contents: eight gold and silver jewelry name, material name, including gold, silver, platinum) quantity, manufacturer's name, address, product standard Numbers, product quality certificate of inspection, according to the weight of the gold and silver jewelry sales should also include weight. Act the role of other marker average performance is jewelry label brand and sales note. Therefore, consumers to buy the metal jewelry business must please invoice, and pay attention to the content of the invoice is complete (including the above eight content), is introduced and the product tells the content to agree. The choose and buy tip: 1, the famous shopping mall in the regular channel purchase precious metal accessories. Note that the attached jewelry identification, identification certificate and the consistency of the jewelry. Don't blind worship of the brand and the certificate, because foreign jewelry appraisal certificate expensive jewelry merchants, illegal violation of "a treasure a card" requirements, sometimes have to take a certificate copy more than one deal with pieces of jewelry approach to cater to some buyers vanity, cheat consumer. 2, precious metal jewelry is according to the weight and process cost calculation price, the jewelry weight is one of the important indicators. According to the QB/T the precious metal jewelry quality measurement tolerance of provisions, gold, platinum, palladium jewelry quality measurement tolerance is + - 0.01 g, silver ornament quality measurement tolerance is + - 0.1 g. Gold, platinum, palladium jewelry and quality of materials, when writing keep two decimal places; The quality of the silver ornament, when writing keep a decimal. Suggest that consumers buy jewelry, require companies to act the role of the weight FuCheng, lest shortweight. 3, precious metals identification and inspection has higher professional, certificate of precious metal jewelry inspection technology organization's name and contact way to keep in mind, once produce consumers to purchase precious metal jewelry quality when in doubt, can contact quality inspection department, in order to safeguard their legitimate rights and interests. 4, should pay attention to the precious metal jewelry wear and maintenance
Gold and silver soft, just as its name implies, it should pay attention to wear and good maintenance. If there is a negligence, hard to avoid can lose the original luster and charm. Generally speaking, the time is to be careful: for precious metal jewelry quality of a material hardness is small, the use should be especially careful, gentle with hard, don't and collision and friction, so as to avoid the percussion mark, cross ditch, depression or color. Especially the hollow chain or bracelet, after the impact is very easy to appear scallops, affect beautiful. Try to avoid contact with water, because the water has lively chloride ion corrosion, adorn article. Avoid and cosmetics and all chemical contact. Because some cosmetics and chemical containing mercury (mercury), it will happen and gold effect, make gold surface become dark white. Act the role ofing is tasted and sulfide contact will make the black surface, forming a black silver sulfide. Corrosive chemicals and will make jewelry surface lose luster. Take a shower and sleep don't wear necklace to wait adorn article, in order to avoid water and chemical corrosion, also avoid tensile deformation or fracture lost. Special fine craft necklace or woven chain, easy to snap. Act the role ofing is tasted best often use jewelry nursing liquid cleaning and maintenance to keep clean bright. Adorn article surface color, don't be optional treatment, had better ask professional processing
The article is provided by jewelryshopvip, please mark if you want to reprint http://www.jewelryshopvip.com