How to know how to buy amber has always been a topic of concern for consumers, so let's take a look. The most common types of fakes on the market are the following:
Plastic products: plastic products market is more common, such imitation products are generally bright colors, not only have normal amber yellow, but also a variety of bright red, green, blue, purple, African beeswax sold on Taobao, and the Middle East Most of the nobles, gold silk, and snow mountain beeswax are plastic products. Some even imitate the cracks of the old beeswax or the potholes on the original stone.
Resin products: These kinds of imitation products generally use polyester resin, which is very golden in color, and its transparent density is similar to amber, and it is easy to dye and is a high-simulation product. Often used to make fake insects.
Coba products: Strictly speaking, Coba should be regarded as amber in childhood. Because it contains insects or other wraps, it is often sold as insects. However, Coba products are easy to stick to ash, and they also have a sticky feeling when playing. Some even fog on the surface for a while and need to be re-polished.
Mixed materials: According to experts, there is now a replica made of coba and plastic mixed to change the shortcomings caused by the lack of Kobe Petrochemical, and even can make carvings, the general methods and experts can not The difference is that such replicas can only be detected by professional institutions using professional instruments.
Second-generation amber: Amber, which is often re-bonded with amber pieces or amber powder and synthetic resin under high temperature and high pressure, is called second-generation amber. This amber is commonly known as augmented amber. If it is a second generation processed into small pieces, it will have a bloody closed pattern when viewed with the naked eye. This kind of amber is easy to see with a purple light tube. Fluorescence reactions are generally mottled, and some are as messy as the stars.
If you want to know whether the amber you bought is true or not, mainly look at these aspects:
Feel: Amber density is small, and it is a neutral gem. Summer is not hot and winter is not cool. If it is a glass product or other crystal chalcedony imitation, it feels much heavier than amber, and it will have a cold feeling.
Look at the rogue pattern: amber is formed by the natural resin petrochemical. The resin flows down slowly, whether it is in the tree or the tree, so it will form a certain pattern. This pattern generally travels in one direction, is natural and ever-changing, but rarely forms a closed circle.
Look at the bead hole: If you are buying a bead product, it is best to open the hole and the hole of each bead carefully. It is difficult to ensure that each amber bead is the same. You can find that it is broken when you punch it. Small mouth, the size of the small mouth should be different, and even there will be white powdered amber powder. The holes in the imitation are almost identical.
Ms. Dong said that in addition to the naked eye, there are four simpler methods for identification:
Specific gravity test: Mix the salt and water in a ratio of 1:4, stir the salt to dissolve completely, and put the amber product into the brine. If it can float, it can be excluded from plastic or other synthetic products.
Fluorescence reaction: Under the short-wavelength of ultraviolet light, the natural amber fluorescence reaction is relatively strong, such as the light green fluorescence of Haiper, the blue fluorescence of the mineral. Blood is not gray and green, no matter where it is produced. It can also be said to be dark green.
However, it should be noted that if the optimized amber or old amber, or the rough with the outer skin, will only have a strong fluorescence reaction after being polished or re-polished.
Point Washing Water: The main ingredient is diethyl ether, which is a good material for testing amber and coba. Apply amber to a corner that is not easy to see. Amber has been petrified for thousands of years. It does not substantially react to ether in a short period of time. Touch it by hand at the applicator water, leaving no trace at all. The coba and rosin were dropped on the ether and then felt sticky at the applicator by hand, and even left fingerprints.
Hot needle test: a red-hot sewing needle is stuck in the inconspicuous part of the test sample, for example, the hole of the bead, the back corner of the engraving, the amber will have a light rosin bean flavor or no taste, hot needle Cannot be inserted, and the contact surface of the sample with the hot needle appears to be cracked and does not stick. In the case of Coba or rosin products of less than the year, the hot needle can be easily inserted. When the sample is inserted, the sample contact point may even bubble, the needle is easily stuck, and sometimes the wire is pulled out when pulled out.
If it is a plastic product, hot needle insertion will also have a pungent chemical flavor.
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