The lobular rosewood bracelet is used to make the old 6 big techniques. In order to make a profit, unscrupulous merchants deliberately use these methods to pretend to be old bracelets. Everyone must pay attention. One of the techniques: shoe polish The method of discriminating: the surface is black and bright, the wax is too heavy, and the flicker-like glitter "ghost pattern" is covered. Sometimes you can see the bright red stripes on the bottom of the fresh wood. Illumination of the black area and the edge of the magenta area with a strong light lamp has no transition, and the finger is pressed hard, and the residual fingerprint is very obvious. Technique 2: Coating Discriminating method: the surface is black, the matt particles of the distressed paint are obvious, and the wood grain is almost invisible. Use wood to swipe in the newspaper, no obvious color scratches, or the scratch color is black (normally, rosewood should leave a purple-red scratch). This kind of falsification, the internal wood may not even be rosewood. Technique 3: Brush potassium permanganate Method of identification: Potassium permanganate is a purple-black chemical with strong oxidizing properties. Brushing potassium permanganate solution is a common method used. The treated red sandalwood is grayish black, and the blue purple print can be seen under the strong light. Wipe with a napkin and water to see the purple discoloration. The fourth method: brush edible alkali Method of identification: The edible base is a white powder, the chemical name sodium carbonate, which is weakly alkaline, and can react with the tannins (a chemical component of wood) in the rosewood to blacken. Under the treated red sandalwood glare, you can see the bleached white stripes and the fresh red inside. The scratches on the newspaper are first brown and bright red. The fifth method: brushing alkali Identification method: the white base of the caustic soda, the chemical name sodium hydroxide, is strongly alkaline and corrosive. The treated red sandalwood has a brownish black surface, no black satin brilliance, black uniformity, and the color does not change with the wood texture. After touching with a wet hand, it feels particularly slippery between the two fingers. Use a white paper and water to wipe the discolored orange. Technique 6: Brush lime water Identification method: slaked lime, chemical name calcium hydroxide, is weakly alkaline. The treated red sandalwood surface is black and black, the color is uniform, the color does not change with the wood texture, there is no black satin brilliance, and the surface wood grain is covered with black. Wipe with white paper without discoloration. The scratches on the newspaper were black. To sum up, doing old and old is nothing more than steaming, boiling, frying, soaking, smoking, brushing and chemical reagents. Everyone needs to know more about their physical properties, such as appearance, density, smell, etc., and carefully discern them when purchasing.
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