There are many counterfeit products in turquoise, but there are not many common ones. There are mainly blue malachite, dyed chalcedony and glass and porcelain.
Glass and porcelain imitations look very like turquoise, but the gloss is strong, it is glass luster, unlike the waxy luster of turquoise; in addition, as long as you look closely, you can always find bubbles on the near surface; then the fracture, If it is glass, it will be a shell-like fracture with a glass luster, turquoise is a flat fracture and the gloss is dull to waxy or even earthy, which can be distinguished.
The density of the chrysocolla (2.0～2.4) is lower than that of the turquoise (2.6～2.9), so the hand rubbing will be lighter than the turquoise; in addition, the chrysocolla is mostly glass luster, and the turquoise usually has a weak luster and a waxy luster. . Of course, the most important thing is that its structure is different, but usually we are not easy to observe, which requires the aid of a microscope.
The dyed chalcedony mainly refers to the blue stone dyed in the sky blue. In the bluestone, it is almost always found or localized to find a circle like agate, as long as it is found that it can be distinguished from turquoise. In addition, the glass luster of the dyed bismuth can also be distinguished from the waxy luster of turquoise.
Synthetic turquoise is artificially made of turquoise, usually pure and uniform in color, with few impurities (ie white or brown veins or plaques). Large pieces of natural turquoise jade will always have some impurities, and it is difficult to see such a large piece of pure jade. Therefore, synthetic turquoise is often used to make jewelry and small crafts, which is very similar to natural high quality turquoise. It is usually necessary to observe the structure at a magnification of 50 times because the synthetic turquoise differs from the natural turquoise in that the synthetic turquoise has horny blue small particles in the light-colored matrix. Without a microscope, we can't see this.
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