Introduction to the identification method of sapphire
Sapphire is as expensive as ruby. If the color, clarity, and cutting are good, the price is very high. A small one often costs tens of thousands of yuan. But there are a lot of counterfeit sapphires on the market, so be cautious and buy a high-quality sapphire for a small amount of money, which is mostly deceived. Introduction to the identification method of sapphire Sapphire belongs to the category of jewelry. At the moment, collection jewelry is very common. However, in the process of buying and selling collections, it is important to learn a little bit of identification and identification. The market is used as a sapphire, and glass is common. In fact, it is easier to identify glass. The glass is pressed out at a high temperature and shrinks naturally after cooling, and the plane is recessed inward. This sag phenomenon is not easy to find with the naked eye. It must be magnified by a magnifying glass. When using a magnifying glass, it cannot be linearly focused. It should be obliquely focused, and it is easy to find concave, concave, usually glass. The polishing of the gemstone usually achieves a very flat effect. Another method of identification is that there are many types of inclusions in the glass, the most common being bubbles, and the stones are free of bubbles. The bubbles in the glass can be found by observing with a magnifying glass of 10 times. There is also a synthetic sapphire that acts as a sapphire. The identification method is to look at the texture first, whether the texture of the texture is naturally crystallized, and the natural crystallization is often messy and disordered, so it is usually genuine. The synthetic sapphire, the crystal is often very orderly. Of course, many synthetic sapphires are clean and flawless, which is usually fake. Because natural gemstones are always somewhat foreign, there is almost no cleanliness. This synthetic sapphire is often glaring in color, very radiant, and has no deep sense of natural color. The natural gemstones are of high purity and are not glaring, and the brilliance is naturally emitted from the inside out. Glass: It is usually dyed with a dark blue pigment made of cobalt (Cobalt) or cobalt. It will be red under the color filter; the refractive index is different and it is single refractive. Artificial spinel: Same as above. Sandwich stone: the upper part is a real sapphire and the lower part is a fake. Place the stone in the water and carefully observe the different colors, luster and inclusions on the upper and lower sides of the waist. Spinel: Single refraction with different refractive indices. Tanzanian Stone (Tanzanite): Physical properties are different. The world's larger cutting sapphire - "Oriental Blue Giant", this sapphire is rectangular, originating from Kashmir, weighing 486.52 carats, is a rare treasure in the world of jewelry. Kitchen Mat,Anti Fatigue mat,Non Slip Kitchen Floor Mats,Anti Fatigue Mat For Kitchen Changzhou Broad New Materials Technology Co., Ltd , http://www.czbroad.com