How to identify top turquoise? Identification of turquoise

First, the water soaking method natural turquoise has strong water absorption, put it into clear water, different turquoise will produce different reactions. Porcelain pine has a higher density and a tight texture, and when you put it in clean water, it will not produce any reaction. The soaking test can also detect the degree of turquoise porcelain, and the color of the turquoise after soaking in water has changed significantly, indicating that its porcelain degree is not high.

Second, the natural turquoise of the fire method will turn black immediately after fire, but it has no effect after being wiped off in time and washed off with water. Turquoise is optimized to emit a pungent odor or plastic odor, which is a destructive method that most merchants don't let you test. Third, the color of natural turquoise is relatively warm and moist, and the color is very natural; The fake turquoise color and luster will have artificial traces, and the color will look very uniform.

Fourth, the method of looking at the iron line is most suitable for beginner players, and it is simple and easy. Most of the natural turquoise will have a little iron wire, and the iron wire of natural turquoise is concave inside, and the texture is irregular, natural and casual. After artificial treatment of fake turquoise, the iron wire is basically convex outward, and the thickness of the iron wire is very similar, it looks very stiff, and the distribution has no beauty.

Fifth, the purple lamp identification method natural turquoise has no reaction under the irradiation of the purple lamp. And the optimized turquoise will also fluoresce significantly under fluorescence, which is why many veteran players always carry purple light torches.

1.The luster of turquoise is far less brilliant than sapphire, the common turquoise is waxy shape, the whole turquoise looks uneven, if the turquoise looks shiny, then it must be fake.

2.Turquoise is an opaque gemstone, most of the turquoise is opaque, only a few turquoise transparent luster, that few are only in the hands of collectors, and will certainly not fall on the market, which is also incomparable with sapphire.

3.Turquoise identification has a signature feature, that is, irregular iron lines, the overall look is completely irregular, uneven, meandering, which is also a condition that other gemstones do not have.

4.Turquoise is often used as a substitute for other precious gemstones such as jadeite, and they are often used to set into a variety of jewelry, due to the special characteristics of turquoise, such as density and hardness, the overall appearance of the jewelry is not harmonious, and if you look closely, you will also find that the luster of the jewelry is not harmonious. It can be seen in the small details of these jewelry.

5.There is also a kind of soaking in water to identify turquoise, the real high porcelain blue turquoise, very rarely there will be a waterline, because the porcelain degree is high, the internal gap is almost small, the water molecules into very little and very slow, sometimes soak for a few days before the color will be slightly darker. There is also a situation that turquoise has some soaking water does not necessarily appear waterline, it may become dark in the overall color, but the depth is not obvious, so you must observe carefully when you want to use soaking water experiments, there is also a kind of wax skin material can not be soaked in the waterline, everyone be cautious.

The identification methods of turquoise include white spots, iron wires, and ore spots.

1. White dots. Raw ore turquoise generally has white spots, white spots are a very common situation of raw ore turquoise, many friends buy turquoise with "white spots", will question the quality and authenticity of turquoise. In fact, most raw turquoise will have more or less "natural" white spots, which are shallow white spots attached to the turquoise skin, which are the physical characteristics of turquoise given by nature.

2. Iron wire. Iron wire is one of the most common physical properties of raw turquoise, which is a collection of brownish-black minerals distributed in the form of veins or reticulated lines, and symbiotic with turquoise. As a product of nature, we need to recognize its natural form and face up to the existence of iron wire, which is an innate physical property of turquoise.

3. Ore spots. For some elements with less iron wire or the money line removed in the processing process, then it is necessary to use the third characteristic of turquoise, "ore spots". Ore spots are generally impurities formed by bedrock protruding into the turquoise under the action of crustal pressure in the process of turquoise generation, which can only be removed as much as possible during processing, but will never disappear, so it has also become an important feature to identify the true and false.

Turquoise

Turquoise (also known as turquoise, also known as Turkic jade, turquoise, turquoise) is a hydrated copper-aluminum phosphate mineral, which belongs to the phosphate mineral.

Turkey does not produce turquoise, and legend has it that turquoise from ancient Persia was brought to Europe through Turkey. Turquoise reserves are huge, not only in China, but also in Egypt, Iran, the United States, Russia, Chile, Australia, Peru, South Africa, India, Pakistan, Ksmir, etc.

Counterfeit identification.

1 Diaspsite: A mineral that coexists with turquoise, the main difference from turquoise is:

Its color is relatively light, and it is difficult to achieve sky blue:

Vitreous luster, different from the waxy and earthy luster of turquoise.

Brittle and prone to caving, turquoise is tougher.

Less hard. It has an earthy smell.

The density is lower than that of turquoise.

2 Silis-malachite: A mineral that is very similar to turquoise in appearance. The main differences are:

The color is bright and the transparency is high.

The refractive index is lower.

The density and hardness are relatively low.

3 Blue-green glass: The main differences are its vitreous luster, shell-like fractures, and the bubbles and swirls that may be seen inside.

4. Reconstituted turquoise: It is made by pressing some turquoise particles and blue powder materials at a certain temperature and pressure. This material can be identified by the following aspects:

Structure: Looks like porcelain, with a distinct granular structure.

Acid test: blue color due to copper-containing compounds, copper salts can be dissolved in hydrochloric acid. Drop the acid on the surface and wipe it with a white cotton ball to fade.

Optimize processing and its identification.

Natural turquoise is usually modified by methods such as wax injection, dyeing and injection molding. This practice is usually frowned upon in the jewelry world because it changes the nature of turquoise.

1.Stain. The color of dyed turquoise is unnatural, and the dyed turquoise on the domestic market is often dark blue-green or dark green, and it is too uniform, but in the cracks, the color becomes darker.

Dyed turquoise is very light in color, generally around 1mm, and light-colored nuclei may be exposed in some places.

2.Injection molding. Injection molding includes the injection of colorless and colored plastics, and injection-molded turquoise (Fig. 12-5-7) can be identified by the following points:

Refractive index: Injection molding will generally be lower.

Relative density: The relative density of injection molding is low, generally less than.

Hardness: The Mohs hardness of injection molding is generally 3-4, and the injection turquoise is prone to scratches.

4) Infrared spectroscopy: strong absorption between 1450cm and 1500cm caused by plastics, while in newer injection molded varieties, there is a strong absorption band of 1725cm.

1. Soaking natural turquoise has strong water absorption. When placed in clear water, different turquoises will react differently. Porcelain pine has a high density and dense texture, and it will not produce any reaction when put into clean water.

The immersion test can also detect the degree of porcelain of turquoise. If the color of turquoise changes significantly after soaking in water, it means that its porcelain degree is not high. Second, the firing method of natural turquoise will turn black immediately after firing, but it will have no effect after being wiped off in time and washed off with water.

The optimized turquoise will give off a pungent odor or plastic smell. This method is destructive, and most merchants won't let you test it that way. 3. The color of natural turquoise is warm, and the color is very natural; The fake turquoise color will have artificial traces, and the color will look uniform.

Fourth, look at the wire. This method is best suited for novice players and is simple and easy to do. Most of the natural turquoise will have some iron wire, and the iron wire of natural turquoise is concave, with irregular lines and natural.

The artificial false turquoise, the wire is basically convex outward, and the thickness of the wire is very similar, it looks relatively stiff, and there is no beauty in distribution. Fifth, the purple lamp identification method natural turquoise has no reaction under the irradiation of the purple lamp. Optimized turquoise also exhibits noticeable fluorescence when exposed to fluorescence, which is why many veteran players always carry purple torches.

Summary. Hello, the methods of identifying turquoise have the following points:1

Shape: Turquoise can be divided into oval, vertebrae, crescent, etc. according to its natural shape, of which the crescent shape is the most common and the shape with the most turquoise characteristics. 2.

Appearance: Turquoise is mostly dark green, and has obvious green markings, its surface has fine layered waxy crystals, exudes a special luster, and the appearance may also have light yellow or light gray inclusions. 3.

Hardness: Turquoise has a very high hardness and can be reached on a hardness scale, which is harder than ordinary stones, so when scratching, there will be no wear. 4.

Abrasion resistance: Turquoise is also very resistant to abrasion, can be used in places that are not susceptible to abrasion, and has the advantages of corrosion resistance and heat resistance. 5.

Thermal conductivity: Turquoise also has better thermal conductivity than ordinary stones, and can be used as a heat transfer material in high-temperature environments, and can also be used in machinery such as automobiles.

Can you elaborate on that a little bit more?

Hello, the methods of identifying turquoise have the following points:1Shape:

Turquoise can be divided into oval, vertebrae, crescent, etc., according to its natural shape, of which the crescent shape is the most common and the shape with the most turquoise characteristics. 2.Appearance:

Turquoise is mostly dark green, and has obvious green spots, its surface has fine layered waxy crystals, exudes a special luster, and the appearance may also have light yellow or light gray inclusions. 3.Hardness:

Turquoise is very hard and can be reached on a hardness scale, which is harder than ordinary stones, so when scraping, there will be no wear and tear. 4.Abrasion resistance:

Turquoise is also very resistant to wear and tear, can be used in places that are not susceptible to wear and tear, and has the advantages of corrosion resistance and heat resistance. 5.Thermal Conductivity:

Turquoise also has better thermal conductivity than ordinary stones, and can be used as a heat transfer material in high-temperature environments, and can also be used in machinery such as automobiles.