Turquoise is a very long history with many beautiful legendary gems. She is popular in Europe and America, and also ranks in China's "four famous jade". In ancient China, from the pre-Qin to the Ming and Qing Dynasties, royal ornaments and artifacts appeared. Turquoise figure. The Persian ancient country regards turquoise as a gift from the gods. The green pine, which is the "Bamboo Seven Treasures", is also known as the Buddhist instrument. In today's Sichuan and Tibet areas, believers still love to wear turquoise, and more and more oriental beauty is deeply attached to her.
However, this kind of care for the city, and then consider the baby of the country, because of the beauty and magic, so many people have a "heart", artificially posing as natural turquoise. The most important means of counterfeiting are nothing more than two kinds. As long as you understand these two tricks, you can enjoy the beautiful turquoise without any peace of mind.
1. Reform “Songshiâ€.
In order to improve the appearance and color of some poor quality natural turquoise, improve durability and make it easy to be polished and not easily broken, it is usually modified by waxing, injection molding and the like to modify natural turquoise. This practice is generally recognized by the jewelry industry, after all, the quality of turquoise is too small.
The main component of the modified turquoise is still natural, but after the upgrading process, the natural energy has a lot of losses. If you buy it to get energy from the turquoise, this modified turquoise is best not to buy. There are two common methods of upgrading:
1 wax injection
The wax can compensate for the holes in the surface and deepen the color. The processor also uses a liquid dye to mimic the arachnoid texture (iron wire) of the natural turquoise surface.
2 injection molding
Injections sometimes add colorants to compensate for holes and reduce surface light scattering, giving the turquoise a medium-blue hue and improved durability. Turquoise injection molding is a very common treatment, also known as turquoise stabilization. There is a large amount of turquoise that has been stabilized in the market. The stabilized turquoise has a good color and a low relative density, and the hot needle test causes the plastic to precipitate.
2, artificial synthesis
This kind of so-called turquoise, a little natural turquoise ingredients are gone, of course, there is no natural spirituality. If you buy turquoise to get spiritual energy, you can't buy this kind of synthetic turquoise.
Many illegal traders and workshops use the Gilson method to synthesize turquoise. A ceramic manufacturing process is employed. The blue particles distributed on the shallower substrate can be seen in magnified view, which is commonly known as the "cheese-clip wheat" phenomenon. Synthetic turquoise has typical blue tiny particles, sometimes with artificial "iron wires" on the surface. Dyed hydroxyaluminite is a cheap turquoise imitation.
Turquoise has a variety of colors such as light blue, medium blue, green blue, green, etc., with mottled colors, dark spots and textures (turquoise texture commonly known as iron wire).
The quality of the turquoise is relatively dense, which is good for polishing the color; the poor quality of the porous, easy to lose water and fade after the sun. Turquoise blue is made of copper and green is made of iron. But all in all, the quality assessment criteria for turquoise is: the bluer the color, the better, the less the iron wire, the better, the denser the texture.
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