Can you distinguish true and false turquoise by soaking in water? Last week, the reporter came to the Songge Pavilion in the Shilihe Yayuan International Market, and under the guidance of the turquoise professional sellers, this method was verified.
The seller said
Common fraud
There are four means
Turquoise is a collection of phosphate minerals of copper and aluminum. There are many types, except for the common blue and green, and the rare green, brown and lavender.
The seller Cui Wei told reporters that as the price of turquoise has risen year after year, the means of fraud has also emerged endlessly. Common methods are silicone, injection molding, dyeing, and powder pressing. Cui Wei told reporters that the first two methods only increased the density of turquoise to a certain extent and played a certain optimization role. The latter two are purely fraudulent. Silicone refers to the infusion of turquoise in the glue, while the injection of glue is created by the pressure of the vacuum, the glue into the stone. Dyeing is how the white pine stone is dyed in turquoise. Cui Wei introduced that white pine is similar to turquoise in appearance, but the price of white pine is calculated in tons, while the turquoise is calculated in grams. The price difference between the two is several times. Powder pressing is the process of casting other materials into turquoise.
In general, the authenticity of turquoise is determined by professional instruments, but professional instruments cannot be carried around, so the seller is provided with a deceptive space. To this end, many turquoise buyers want to use a simple method to distinguish between true and false. However, Cui Wei told reporters that because Turquoise's counterfeiting methods continue to innovate, even those who have been in the industry for many years do not dare to use the pictures to distinguish whether turquoise is processed or not.
experiment
Water immersion
Not reliable
Recently, there is a simple way to distinguish between true and false in the turquoise circle: flooding. Is this approach really reliable?
Cui Wei came to a basin of clear water and dipped a light blue turquoise pearl into the water to make it half of the water. Five seconds later, Cui Wei took out the beads. The reporter saw that half of the color of the water had become darker and it felt sticky. Later, Cui Wei picked up a very smooth turquoise bead and dipped it into the water in the same way. Half a minute later, Cui Wei took the turquoise beads out of the water. This time, the color of the turquoise beads did not change. The reporter also put a powdered fake turquoise into the water, and like the second turquoise in the water, this pressed turquoise has almost no change. Cui Wei said that the first two turquoises placed in the water are really turquoise. The first turquoise texture is loose and easy to absorb water and discoloration. The high-density turquoise, because of its tight texture, does not absorb water and naturally does not change color. The fake turquoise does not absorb water due to treatment. Therefore, this method of water soaking to distinguish between true and false is not reliable.
Expert advice
Look at the two to identify the authenticity
So is there any way to identify true and false turquoise? Cui Wei gave two methods, one is “seeing†and the other is “touchingâ€.
Look, besides seeing if the iron wire is even, look at the turquoise texture. Cui Wei showed reporters a bunch of "turquoise" bracelets that friends bought from the United States. This hand string has a light stone pattern that looks very beautiful. Cui Wei said that this is actually a string of stained fake turquoise, and the problem lies in the light stone. “This is called porcelain grain, which looks like a small crack formed by firing open porcelain. This is the most typical feature of such fake turquoise.â€
As for "touching", Cui Wei introduced: "Turquoise has strong water absorption, so it will be sticky when touched, but it will not be too sticky." Cui Wei said, but if the turquoise touch feels like the double-sided adhesive, then the explanation This turquoise is glued.
Finally, Cui Wei suggested that in order to be safe, when buying turquoise, especially those with higher prices, it is best to go to a professional appraisal agency to identify it, which is relatively safe.
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