There are several ways to identify authenticity: 1. Birefringence method: take a black line or hair, stick it on white paper with adhesive tape, put the crystal on the line, and watch the black line or hair through the crystal. If it is refracted into two lines, it is crystal stone. If it is not refracted, it is still a line shadow, so it is not a crystal stone. This method can distinguish between crystals and glass products, but there will still be double lines in artificially cultivated regenerated crystals, which cannot be distinguished. 2. Magnetic field test method: Hold two rock crystal pieces with three fingers of thumb, forefinger and middle finger, with a distance of about 1-2cm, and slowly rotate relative to each other and get close to each other, and immediately you can feel a wonderful force similar to the attraction and repulsion of magnets, especially the crystal ball, which is not found in rock crystals, including synthesis. 3. Choose crystals that are not easy to imitate (such as hair crystal, green ghost, amethyst, crystals with inclusions, natural ice cracks, clouds and ribbon changes, or choose crystals with slight defects. In addition, the specific gravity: those that are too light must be fake, 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, and it is not easy to find them 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.
It should not be expensive.