Before, we also introduced a lot of methods for the identification of jade and jade. Today, Xiaobian starts with the level of jade, and introduces to friends a class of emeralds such as a, b, b+c, c, d and e. Identification method!
Gold is priceless and jade is priceless. In the traditional sense, jade can be divided into two types: jadeite and nephrite, and jadeite is the only jadeite mineral rock. As is known to all, Myanmar is the main source of jadeite materials in the world, accounting for more than 98% of the market share, and is the only place for quality jadeite. The jadeite production area is about 13 square kilometers. After centuries of mining in such an area, the quality of jadeite resources can be said to be few, so the high-quality green jade is very rare and the value is rising all the way. Therefore, the green jadeite that has been manually optimized in the market is not uncommon. Shu Aiwen introduced that in fact, no matter how sophisticated the processing method is, the optimized or imitation products must be different from the natural jade. In general, jadeite can be divided into six categories: a, b, b+c, c, d, and e.
a goods: natural jade products without any treatment.
b goods: jade products by strong acid or strong alkali etching and injection (dipping wax).
c goods: artificially dyed jade products (b + c goods - strong acid etching + injection + dyed jade).
d goods: is a jade-like natural jade that is sold as jade. Such as water foam stone, Dushan jade, Malay jade, agate, Dongling stone and other silicon jade.
e goods: is a synthetic imitation jade product such as glass and burning materials.
Because there are no professional identification instruments for our friends, today we have introduced the simple and practical jade identification skills:
1. Look at the color of the positive and "evil" (natural and dyed). The natural jade color has a color root, the color is tangible and unevenly distributed; the dyed jade color is divergent, invisible, floating, and distributed in a mesh form on the surface.
2. Look at transparency (planting water). The transparency of natural jadeite is uneven, and the boundaries between transparent and opaque parts are distinct. b goods jade overall white, foggy, turbid, unclear transparency; a cargo round and clear, b goods have a turbid feeling, not bright enough; a white goods part of the white, b goods white parts oily, not White is gray.
3, look at the surface gloss, smooth, smooth. The natural jade has a bright luster and a smooth and round surface. The surface of the b and the emerald are rough and the luster is not strong.
4, look at the internal cleanliness. a goods contain a small amount of impurities, especially dirty spots and yellow-brown rust color; b goods and b + c goods inside clean, generally do not appear rust color.
5, look at the process. a goods work finer, polished well; b goods, b + c goods work poor, poor polishing.
6, hand touch. a cargo surface is relatively smooth, b cargo surface is relatively rough, coated jade has a sticky feeling; jade hand touch cool feeling, glass temperature sense.
7, listen to the sound. a cargo jade knocking sound is crisp, like metal sound, bracelet has echo; b goods, other jade knocking sound dull, bracelet no echo.
8, d cargo class jade generally low density, below 2.7. The jade has a heavy hand and a sense of falling. The silicon jade and the water foam stone are light and do not fall. Manager Shu reminded the public that the water sponge stone is a semi-finished jade of Burmese jade, so it often appears in the market, and it is necessary to be more vigilant. The water foam has a low abrasion resistance and is easily scored. Although it feels like ice, it is named because it contains cotton like water. It is not difficult to identify it.
9, e-goods such as glass, burning materials and other imitation jade pieces are not difficult to identify, a little preventive awareness of the naked eye should be recognized. It feels light in your hand, no matter how you look at it, it is not like natural jade.
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