1. Surface coloring method: Soak the colorless gemstone or the lighter color gemstone with a colored solution to precipitate the pigment on the surface of the gemstone to change the color of the gem itself. This treatment method was originally mainly used on porous and multi-cracked jade, but now it is mainly applied to citrine and amethyst, that is, it is soaked with yellow or purple solution with colorless or light crystal, and it is like citrine and amethyst. . In addition, the phenomenon of imitation of violet on the surface of the colorless bracelet is also available on the market. This method of identification is relatively simple to identify, as long as you pay attention to it will not let go.
2. Obstacle method: a method of splicing a colorless gemstone or a gemstone of a lighter color with a colored rope. Mainly used for citrine, amethyst, aquamarine, topaz and so on. Strictly speaking, this is not a treatment method, because it does not deal with the gem itself, but this method is easy for the first-time entrant to miss the price judgment.
3. Fish-eye mixing method: Mix other cheaper gemstones such as glass, synthetic gemstones, and treated gemstones in a chain of beads. Such as citrine mixed glass, natural crystal mixed with synthetic crystal, tourmaline mixed crystal, jade mixed with jade and so on.
4. Polishing powder coloring method: More green polishing powder remains on the inner and outer surfaces of the colorless or light jade bracelet to change the color of the bracelet itself. This method was popular in the market a few years ago and is now resurgent. The test found that this method is used for more oil-like jadeite. Pay special attention to the jade bracelet with uniform color and blue tint in the test.
5. Coating method: The coating method in Guangzhou's jewelry market is mainly applied in the following aspects: garnet coating method: a layer of metallic luster film is plated on the surface of red garnet, and the light transmission is reddish. Commercially known as "red blood stone." Crystal coating method: A film with a metallic luster on the surface of the crystal cluster is used for "Rainbow Stone" sales. Amber coating: A dark red film is applied to the bottom of the yellow amber to improve the appearance of the amber. Coated zebra daisy: The coating is mainly used to protect the zebra daisy raw materials. Because the zebra daisy has a layered structure, if it is not protected, the surface layer is easy to fall off.
6. Charroline staining: The traditional dyeing method is applied to Charcoal. Charo Stone is also known as "Zilong Eye" in the business. It is expensive to use purple, but some Charo stone is uneven in color and light in color. Therefore, Charo stone stained with purple solution appears on the market. Wipe with acetone and magnify the inspection to identify.
7. Fighting legal: In the jewelry market in Guangzhou, it is mainly applied to landscape crystal, watermelon tourmaline and diffusion processing star sapphire. The detection method is mainly to find the bubbles of the split line and the split surface.
8. Artificial "Luminous" material imitation "Night Pearl": use a kind of artificial luminous material containing enamel to imitation night pearl. This artificial luminous material is yellow-green in the early days, and the latest products on the market are dark green, with strong yellow-green phosphorescence in the dark, in the form of fine materials. X-ray fluorescence analysis showed strontium and zinc peaks.
9. Irradiation method: It is mainly applied to topaz, lemon yellow crystal, colored diamond and black diamond. The gemstone treated by this method is difficult to identify by conventional detection methods.
9. New method of jade treatment: In addition to the traditional treatment methods such as bleaching, injection molding (wax), dyeing and re-creation, the treatment method of jade has a new trend, namely the jade bracelet coating method.
10. Jade bracelet coating method: different from the traditional "dressing" jade is mainly applied to the ring surface, this method is mainly applied to the bracelet, the surface of a part of the bracelet is coated, the film is colorless or partially colorless and part colored. The colored part is not a common dye but a fine-grained green jade material. Because this method is not acid bubble, the dye used is also natural, so it is highly deceptive. The main purpose is to fill the gaps in the bracelet or increase the color of the bracelet. The earliest appearance of this bracelet has more bubbles on the surface, which is more sturdy and has a poor gloss. Recently, this treatment method has been improved, and the surface is basically difficult to find bubbles, and the gloss is also good. Of course, this method can be easily identified by conventional detection methods, but it is highly deceptive in the market.
Precautions
Buy jade and jade must have an official certificate
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