How to identify the authenticity of tourmaline? How to tell the authenticity of tourmaline.

To distinguish the authenticity of tourmaline, we must first understand that the most common materials of counterfeit tourmaline are crystal, fluorite, glass, and synthetic glass. Crystal and tourmaline are true and false, generally speaking, crystal does not have red and green like tourmaline, crystal purple is more common, but tourmaline does not have this purple only purple red! Therefore, the difference in color between the two can be used to roughly distinguish the real from the fake.

Fluorite and tourmaline are true and false, the hardness of tourmaline is in Mohs, and the hardness of fluorite is only about 4 degrees on Mohs, and the two can be compared by scratching glass; Secondly, because of the low hardness of fluorite, the luster of fluorite jewelry is far less than that of tourmaline; Another point is that fluorite is often used as multi-colored materials in the pretence of tourmaline, and there is no purple in tourmaline, but the multi-color of fluorite often has purple when it appears, so this is also an effective means to distinguish the authenticity of fluorite and tourmaline. The most obvious is from the internal inclusions, there are often small round obvious bubbles in the glass, if you see such a feature, then you can basically conclude that the glass is not tourmaline; There is another way to pass off glass as tourmaline, that is, to use burst glass to pass off as coarser tourmaline, this kind of glass is generally dyed after bursting, so the color dyes are gathered in the cracks, and it is easy to distinguish through light observation. There is also a phenomenon of using glass to synthesize a faceted tourmaline gemstone, so that the surface of the glass looks like tourmaline, but tourmaline has dichroism and has birefringence, which glass does not have.

Just look closely at the comparison. Moreover, tourmaline as a gemstone generally has an appraisal report, and tourmaline masquerading as glass will not have a formal appraisal report. Extension:

Tourmaline: Tourmaline is a type of tourmaline family that can reach the jewelry grade, tourmaline handicrafts are called tourmaline, tourmaline is a borosilicate crystal, and can contain aluminum, iron, magnesium, sodium, lithium, potassium and other elements. It is because of these chemical elements that tourmaline can take on a wide range of colors.

How to distinguish the authenticity of artificially treated tourmaline and natural tourmaline? Artificially treated tourmaline is mainly filled with gel. And this kind of filling fraud mainly occurs on some loose tourmaline carvings and beads!

This kind of tourmaline has poor permeability and coarse texture due to its internal ice cracks, so its permeability can be improved by injection treatment to cover some cracks and impurities! The surface of the treated tourmaline also has spider web erosion marks similar to jadeite B goods when magnifying and rubbing, and the luster of the treated tourmaline is not hard enough, the internal clarity is not good, and there is a gelatinous mixed feeling! Another point is that if it is a tourmaline faceted gemstone, then the gemstone that has been injected with gel is not as bright as a natural tourmaline loose stone on the reflective surface.

Faceted tourmaline gemstones because of their transparency and internal structure are quite good, generally speaking, high-quality natural tourmaline loose stones are basically invisible to the naked eye without any impurities and cracks, and its transparency is also very high. If you see a loose tourmaline stone that has these characteristics, it will generally not be treated.

1.Color:

Rose, purple, green and pure blue and pretty watermelon are the best, pink and yellow are the second, colorless, and black is the second.

2.Clarity: Requires as few internal imperfections as possible, crystal flawless tourmaline** is the highest, tourmaline with many cracks and gas-liquid inclusions is often used as jade carving material.

3.Transparency:

Transparency refers to the degree of transparency of tourmaline, and the more transparent it is like glass, the higher the value, and the international classification is 4.

4.Workmanship Cut:

Workmanship, the inspection is tourmaline carvings, bead chains, and the level of appearance polishing technology.

5.Rarity:

Rarity refers to the composite index derived from the comprehensive consideration of the four basic attributes of tourmaline: color, weight, transparency and volume, which directly affects the market value of a tourmaline.

For ordinary consumers, the identification of tourmaline can be seen from two aspects:

First, most of the natural tourmaline contains more inclusions, and there are two kinds of inclusions of tourmaline, one is the gas-liquid inclusions in the shape of broken balloon fragments, and the other is the needle-like and tubular inclusions.

Second, tourmaline has obvious pleochroism, looking at tourmaline from different sides, there will be different color changes, such as the most common red tourmaline, in one direction, it is pink, and in the other direction, it is purplish-red...

At present, the most common materials of counterfeit tourmaline are crystal, fluorite, and glass! The distinction between crystal and tourmaline mainly lies in looking at their color, generally speaking, crystal does not have red and green like tourmaline, crystal purple is more common, but tourmaline does not have this purple only purple red! Therefore, the difference in color between the two can be used to roughly distinguish the real from the fake.

Tourmaline selection market ** is actually not bad, as for the value or not depends on her color, quality, weight, and finished product. These will affect the tourmaline**. Tourmaline is difficult to build, and tourmaline in general is real.

If the imitation can be seen at a glance from the color, because the color of the imitation cannot be as natural as natural tourmaline. So there are very few fake tourmalines on the market.

Identification of tourmaline.

1. Tourmaline has birefringence.

Natural tourmaline in the palm of your hand. When you look through the light, the more you see, the less you can see clearly. Since tourmaline has birefringent properties, tourmaline can be used to hold tourmaline in the palm of your hand.

As can be seen from the larger side of tourmaline, the true tourmaline is becoming more and more blurred. The more you look at the fake tourmaline, the clearer it becomes.

2. Multi-angle observation.

Natural tourmaline colors are different from different perspectives. In terms of color, tourmaline comes in many colors, including red, rose, pink, yellow, blue, green, brown, black, and rarely purple. Even if there is one, it is light purple, unlike crystal purple.

If you see an intense purple color, it means it's a fake tourmaline.

3. Look at the texture.

In natural tourmaline crystals, there are more or less cotton cracks and inclusions. **Varies by color. If the tourmaline you buy is very bright and transparent, and it is very cheap, you should pay attention to its authenticity.

In addition, the bracelet of fake tourmaline is bright in color, but it is dazzling and not soft. The color inside the tourmaline is not even visible in the light. True tourmaline has a natural growth pattern inside. This is a unique growth pattern of tourmaline, which is unmatched by other natural ores.

4. Refractive index detection.

Their refractive index can be detected with an instrument-identifying refractometer. Each gemstone has different light refraction parameters. Based on these parameters, we can determine if tourmaline, crystal, and measurement parameters are different. The refractive index of tourmaline is between.

5. Look at this color.

In the identification of natural crystal and natural tourmaline, it depends on the color of the crystal and tourmaline. In general, crystals do not have the red-green color of tourmaline. Crystal violet is very common, but tourmaline does not have amethyst purple, only fuchsia! Therefore, the color difference between the two can be used to roughly distinguish between the real and the fake.

The methods of tourmaline to distinguish the real from the fake are: current, light transmission, and texture.

1. Current

Natural tourmaline is a tourmaline, which will emit a weak current, and it is still difficult to manufacture imitations of this feature.

2. Light transmission

Natural tourmaline is rich in color, and the light transmittance is also very high, the use of light on the tourmaline line, will show other colors. However, the light transmittance of fake tourmaline is relatively low, and it will generally appear very dark.

3. Texture

You can also ** tourmaline texture, wild and use strong light to observe tourmaline, tourmaline contains a lot of natural inclusions and cracks inside, under the magnifying glass, the better the quality of tourmaline connotation of cracks and inclusions. False inclusions will look unnatural.

Tourmaline maintenance method for companions

The first trick is to place the tourmaline jewelry separately in the jewelry box when you don't usually wear tourmaline jewelry, so as not to let the tourmaline jewelry and other jewelry rub and collide with each other, causing unnecessary losses.

The second trick, the hardness of tourmaline is 7 8, which is relatively high, but the tourmaline itself is relatively brittle, afraid of falling and fragile. Unless it is a relatively pure, blemish tourmaline, try not to wear tourmaline gemstones for strenuous exercise or heavy work, so as not to cause the tourmaline gemstone to break.

The third trick is to regularly inspect and repair your own jewelry is a good habit, go to a professional jewelry store every month to check your tourmaline jewelry, if you find that the gemstone falls off, scratches and other phenomena to solve in time.