2010-11/24/_wen200705

Identification of nephrite (2010-10-25 20: 55: 52) reprint labels: Jade beauty is often used to imitate nephrite has represented by Xiu jade ordinary jade, recently out of Russia and Qinghai jade, as well as glass material. The following points in between. 1, nephrite jade and distinguished. Hetian jade its texture, hardness and density have certain parameters; whereas Xiu jade is produced in the Liaoning province xiuyan County, its texture, hardness and weight are not and nephrite. Plus large jade mining, because many cheap, so the market price is very cheap. Xiu jade as delicate texture, head over feet, Hui-to oil sheen, so often make it old to impersonate the old nephrite. But the Jade of soft, easy to eat, and identify the best way is to use a normal knife, carving knife-Xiu jade eat, sheath wire not-in-nephrite. If there is no section with a knife, only look at carving of stab, nephrite stab at no fluff, jade is raising. In addition, a light touch on the jade, percussion sound dull grey Matt, not as crisp nephrite. In addition, there are other common Xiu jade stone used to impersonate nephrite, its differential method generally idem. 2, nephrite jade with Russia, the distinguished Chinese Qinghai jade and the former Soviet Union in Central Asia, are now also produced a jade, commonly known as Qinghai jade and Russia, estimates are branches of the tianshan mountains, therefore the ore constituents alike. The Jade more white, looks like a waxy oil sheen, so it's easy to pass for white. And its hardness and white, so it cannot be used to identify its authenticity. But this kind of jade contains high quality composition of quartz, and white jade quality rough astringent than, of Japonica rice, brittle high transparency; often the Sun and rain, easy to play the diaphragm, cracking and discoloration. In particular Russia and nephrite jade put together to compare, a waxy, a japonica; a white, one is "dead white", its high of self-evident. At the same time, when a sound crisp percussion, a boring or difficult to distinguish. 3, nephrite and "material" to distinguish the market usually also to glass to impersonate nephrite, commonly known as "material". This differential relative is not too difficult, in General, the glass color, no natural variation, with metal foam (Yes you can do the metal foam was neatly off); its material comparison comparison of pure, pure, unlike nephrite jade stalk, cotton-like, radish filamentous and other natural crystalline; magnifying glass pores than nephrite thicker, the fracture surface was shiny ballast shell-shaped, nephrite, presenting varying dark ballast; glass of hardness low, easy to eat, nephrite, high hardness, not eating knife; in addition, the glass material posted at face to feel sensitive parts, its cool less jade. In addition, a sound boring when hit, a crisp.