(1) At first glance, rock crystals are often influenced by the environment and always contain some impurities. When you look at the sun, you can see faint or even tiny stripes or catkins. Fake crystals are mostly made of inferior crystal slag and glass slag. After polishing, coloring and imitation, there are no uniform stripes and catkin-like substances.
(2) Lick your tongue: Even in the dog days of hot summer, licking the surface of the crystal stone with your tongue will feel cold and cool. Fake crystals are not cool.
(3) Illumination: When the crystal is placed vertically in the sun, it can emit beautiful light from any angle. Fake crystals can't.
(4) Hardness: The hardness of the crystal is very high, and it will leave no trace when lightly scratched with gravel on the jewelry; If there are streaks, it is a fake crystal.
(5) Inspection with a polarizer: the rock crystal turns 360 degrees under the polarizer and has four bright and four dark changes, while the fake crystal has no change.
(6) Check with dichroism: natural amethyst has dichroism, while fake amethyst has no dichroism.
(7) Magnifier inspection: under the transmitted light, the bubbles that can be found can be basically classified as pseudocrystals.
(8) Check with hair: If the crystal is placed on a hair, the human eye can see the double shadow of the hair through the crystal, it is a rock crystal, mainly because the crystal has birefringence.
(9) Test with a thermal conductivity meter: set the thermal conductivity meter to 4 squares of green to test the gem, and the rock crystal can rise to 2 squares of yellow, while the false crystal does not rise, and when the area is large, it will rise to 1 square yellow.
Discrimination between natural and synthetic crystals
Another characteristic that distinguishes crystal stone from artificial crystal is its luster. The surface of rock crystal ornaments presents grease luster, while the surface of synthetic crystal ornaments presents glass luster. At present, there is no synthetic crystal with grease luster.
Although crystal is not a precious gem, it is more and more loved by men, women and children all over the world because of its unparalleled medical effect and low price. As a crystal lover, everyone wants to have all kinds of crystals, whether natural or synthetic, but he must want to know whether his crystal is synthetic or natural.
At present, colorless crystal necklaces and tea crystal necklaces on the market can be described as natural and synthetic, while colored crystal necklaces are mostly synthetic crystals. There are fewer real natural colored crystals, and even fewer are used to make necklaces.
The biggest feature of synthetic crystal is that it has a daughter nucleus. Synthetic crystals are easier to judge if they have crystal nuclei, because crystals and generally colorless long plate columns have obvious boundaries with the surrounding synthetic crystals. But recently, some colorless synthetic crystals on the market, the crystal nucleus and synthesis are colorless, and there are some natural inclusion characteristics in the crystal nucleus or some bubbles between the crystal nucleus and the synthetic crystal, which makes some experienced people easily mistake them for rock crystals. If you look closely, you will find what kind of inclusions only exist in children and hosts, and there is a feeling of being blocked around them by an invisible wall. The bubbles between the crystal nucleus and the synthetic crystal are distributed along the crystal nucleus wall, forming a "bubble wall" which is parallel to each other. Some bubbles are tadpole-shaped, and the head is arranged outward towards the wall and tail. In rock crystals, groups of inclusions are often arranged along a surface, but this surface is often single and fluctuating, and the inclusions that make up this surface are mostly binomial inclusions, not just bubbles. The difference between the two is obvious.
The second characteristic of synthetic crystals, especially color synthetic crystals, is the uniformity of smoke color. The color of the whole necklace is relatively uniform, especially the yellow crystal series and the brown-black synthetic crystal. However, natural yellow is often uneven with brown and black crystals. Rock crystals are not only uneven in color, but also often have a tawny hue (except tawny crystals). What's more interesting is that at night, under the white orange lamp, the brown crystals are exactly like brown crystals. If mixed with brown crystals, the environment is difficult to identify. The synthetic topaz I have seen is pure and uniform in color, with some dark tones, but it has no tea tone and will not change color under the white orange lamp at night.
It is worth noting that in synthetic amethyst, some well-oriented deep purple flakes often appear, which is easily reminiscent of the characteristics of irregular flake color groups in natural amethyst. The biggest difference between the two is that the purple clusters in the synthetic amethyst are arranged in parallel sheets, with little difference in size and shape. Purple flakes are compared to floating "purple cloth patches", while purple clusters in natural amethyst can be regarded as floating "purple smoke clusters". This is the main difference between the two.
Natural colored crystals, especially amethyst, have another feature, that is, hexagonal bands like sapphire. It is worth noting that in some synthetic green crystals, parallel bands often appear, and the bands develop parallel layer by layer along the daughter crystal nucleus. I have also seen a synthetic green crystal necklace, which appears in the yellow-green countryside, much like a ribbon of rock crystal. In addition, there are some brown translucent solid impurities in it, which can be easily mistaken for natural green crystals. However, the bands formed by synthetic crystals are distributed in parallel along the subnuclear wall, and the angles between objects are straight. The ribbons of the whole necklace are the same, and the width and color of each ribbon are the same, giving people an unnatural feeling of being too "in step".
The third characteristic of synthetic crystal is cleanliness. There are inclusions and sponges in rock crystals, and the synthetic crystals are crystal clear. Some synthetic crystals have bubbles or some solid impurities. Recently, triangular long tubular pores often appear in some synthetic crystals, and there are green fiery red powders in these pores. This kind of long tube is characterized by parallel arrangement in one direction, triangular cross section, uneven green and fiery red powder distributed along the wall, often empty in the middle, and the end of the long tube is often pointed. The real natural hair crystal is a crystal containing tourmaline, actinolite, rutile and other minerals, which has a gas crystal shape, such as the "bamboo-like" shape of actinolite. They are wrapped in crystals, randomly arranged without direction, with different names for thickness and length, and often accompanied by inclusions and cotton inherent in rock crystals.
I like that kind of crystal clear, but I'm afraid to buy fake inferior products. Why not learn a little discrimination?
Specific gravity: too light must be false, so that imitations such as glass, plastic and pressed particles can be excluded. However, there are many crystals on the market now, the weight of which is similar to that of rock crystal, so it is not easy to find the authenticity by hand.
Refractive index: most people like to look at the crystal under the lamp, so they can't judge whether the crystal is true or not, but only the grade of the crystal, because the refractive index of the crystal is very high. We can put the crystal in a dark place. The color of the rock crystal will be very bright, and the color of the crystal will be dim, lacking the sense of "spirit" and only slightly bright. You can use natural white crystal and glass to compare and feel it.
Price: Crystal cultivation is similar to natural gem-grade crystal, that is, the crystal is extremely transparent, with almost no stone particles, but the price is very different. Usually, crystal training bracelets will be cut into sections. Crystal is transparent, but the price is generally not too high. However, if it is really a natural gem, the price must be above 100 yuan, depending on the size of the crystal.
Color difference: Crystal has color difference, so every part of a crystal can't have a uniform color, such as topaz, which is rare in the market. Natural topaz can be identified by putting it in water. Natural topaz is uneven in color in water. Usually one color radiates to the whole crystal, which is yellow, so the crystal color is absolutely uniform.
Others: it feels very cold, and the crystals with stone lines are basically not fake.
Inclusions: If there are inclusions, there will be no fakes, so you can buy crystals with inclusions such as hair crystals and ghosts with absolute confidence, because the cost of forging such things is very expensive and laborious, and the effect is easy to see through.
There are generally the following kinds of fake crystals on the market: 1. Glass products. Melted crystal 3. Lead glass. Synthetic crystals. Regenerate crystals (crystal culture).
A simple polarizer is used to distinguish between true and false crystals. It is a refraction clip composed of upper and lower polarizers, which can distinguish glass from crystal. Because glass is an isotropic body, you can turn it any way if you put it in the middle of the refraction clip, and the fake crystal is always black; If you rotate 360 degrees in the middle of the refraction clip, there will be four changes in the laws of light and shade, undoubtedly crystal.
Common crystal effects
Topaz: Being the main wealth and increasing windfall is one of the gems to get rich quickly. Sun gear can also be developed to regulate the liver function of stomach and kidney and relieve stress.
Amethyst: mysterious and romantic, it is the only purple gem. It can help you develop your wisdom and develop your potential; Amethyst also represents love, which can make the other person love you forever and promote popularity and heterosexual relationship.
Green ghost crystal: Green ghost crystal is a green phantom or green pyramid formed by chlorite and other minerals in the process of crystal formation, which is very strange. The green light in the green ghost crystal is the arterial light of modern economy, and it is the wealth brought by career and business, which is most suitable for people looking for career opportunities to wear.
Hair crystal: also known as the stone of wealth, it can be divided into gold wire, silver wire, copper wire, black wire, red wire and green wire. Among them, golden hair crystal and titanium crystal are prosperous. Hair crystal energy is very strong, it is a symbol of money and power, it can strengthen your confidence and leadership; The ancient Greeks called hair crystal the arrow of love, so it can promote the smooth progress of love. Hair crystal can also dispel pathogenic factors, which has a good therapeutic effect on bones and muscles and nervous system.
White crystal: White crystal can be called "the king of crystal" (in terms of output). Its energy is stable, it can ward off evil spirits, purify the body's negative energy, promote health, develop potential and maintain a happy mood. This is the spar of good luck.
Pink crystal (also known as hibiscus crystal): pink is the color of marriage and the Lord of love, also known as love stone. Powder crystals are mostly opaque or translucent crystals, and fully transparent crystals are rare. Powder crystal has great love power, which can improve your love fortune, promote marriage happiness and help you make a wide range of people.
Amethyst: Soft in color, rare and precious, between amethyst and topaz, it can soothe the nerves, enhance spirituality and balance the two-line development of things.
Tea crystal (also known as cigarette crystal): Tea crystal has a stable magnetic field, which can dissolve the suffocation, calm down the shock and eliminate disasters, regulate blood gas, strengthen the submersible wheel, and make your work smooth and optimistic.
Black crystal (also known as black crystal): Extremely avoiding evil spirits, which can effectively resolve negative energy and diseases. If used with other spar, it will help you to succeed in your career and realize your dream.
Hai Lanbao: Corresponding to the throat chakra, the energy is smooth and soothing. It can enhance the expressive ability and persuasiveness, calm the mind, keep the mood and keep the peace of mind.
Tourmaline: Also known as wishing stone, its rich colors can be called "colored diamond", which can help you realize your wishes and make friends. Among them, the red and green tourmaline is extremely powerful, which can bring you strong wealth and add icing on the cake to your career.
Garnet: Deep red and dark color, symbolizing exuberant vitality, bringing you good luck and helping you succeed. It is especially beneficial to women's health, can lose weight and beautify, and has remarkable effect.
Olivine: the green energy of olivine brings you vitality and hope; Strengthening self-confidence, enhancing adventurous spirit and accepting new challenges are accelerators for gathering wealth.
Agate: It is divided into red, blue, green and black. The energy released by agate helps to improve the career fortune and make the performance rise steadily.
Natural amethyst Cave: Absorb the charm essence of nature and release powerful energy. Not only can your body and mind be adjusted in balance, but it can also gather spirituality and make you lucky. It is best to match indoor green plants.
Crystal Seven-Star Array: It condenses the cosmic energy, which is extremely beneficial for praying, practicing and treating diseases. Seven-star arrangement has a strong motivation, which can help you build good relationships and create wealth.