Identification of genuine and crystal —-
① see: natural crystal formation process, often subject to environmental impact will always be a number of impurities, to observe the sun at the time, we can see light or even a small band-like material catkins. And false use of defective crystal crystal residue, melting glasses After polishing process, modeled by shading, there is no uniform stripes, Liu-like material.
② tongue licking: Even in the hot dog days of summer, with the tongue licking the surface of the natural crystal, but also the feeling of cold and cool. Leave the crystal, there is no sense of cool.
③ illumination: put the natural crystal in the sunlight, no matter the angle from which it can produce a beautiful luster. Can not leave the crystal.
④ hardness: the hardness of natural crystal, and jewelry with the rubble in what is zoned gently, not leaving any traces; if left fringe, it is false crystal.
⑤ using polarized light microscopy: polarized light microscopy in 360-degree rotation, four out of four changes in the dark is a natural crystal, there is no change in the crystal is false.
⑥ using two-color check: There are two natural amethyst color, and leave no crystal dichroism.
⑦ inspection with a magnifying glass: A ten-fold under the magnifying glass in the transmitted light inspection, basically to find a bubble crystal can be classified as false.
⑧ check with hair: the crystal on a hair, the human eye can see through the crystal double shadow of hair, is a natural crystal, mainly because with a birefringent crystal.
⑨ detected by thermal conductivity: The thermal conductivity instrument regulating cell test 4 green stones, natural crystal can be increased to two yellow cells, which do not leave crystal rose, when the area rose to a yellow grid.
Crystal’s selection of products?
① election expected to see: the best finish of crystal products, should be point-like stars can not see,distribution of gas-liquid flocculent inclusions; texture of pure, smooth, crystal clear as well, if found to have broken cracks of varying depth , Dot, are defective.
② to see work: Crystal products are divided into two processes, namely, mill workers . Crystal necklace, bracelet, earrings and other goods belonging to grinding; concept of audio-visual, etc., inside-painted snuff bottle sculpture belongs. A good work should be considered fine crystal products, not only can fully show the U.S. external crystal products (shape, style, symmetry, etc.), but also to maximize the excavation of its inner beauty (Jingying, Qiao-color).
③ polished look: polishing a direct impact on the value of the crystal products. Crystal in the process to go through Jingang Sato sand, rough surface of the crystal will produce the signs of the existence of friction. Natural products good crystal transparency, better than gloss, by and saying “enough fire.”
④ see hole: For up to wear crystal products (such as necklaces, bracelets), depends on whether the hole is straight, uniform hole size is, the availability of small cracks. Hole wall should be crystal clear, no “white marks.”
⑤ see colors: even in the same types of crystal, it’s different parts of the texture, variety of color also is different. Are monochrome, it is necessary to color uniformity; in the same depth of a piece of crystal there, then the requirements of its beautiful color patterns.
⑥ see coordination: when to buy crystal jewelry, you wear test to see the size of elastic, the length. Mosaic jewelry case to see if a strong, unified and coordinated Zhou Zheng. Crystal jewelry should also be noted that the style, color and body with its own, color, face and clothing coordination