How to distinguish gems and stones?

How to distinguish gems and stones? The brilliance of gems is brought out by their color, luster, transparency, refraction and polishing. Since gemstones often contain inclusions, double crystal lines, lattice structure defects, etc., which cause light interference, diffraction, and scattering, special optical effects will appear in the sun, including starlight effects, cat's eye effects, discoloration effects, etc. Moonlight effect, play-of-color effect, Venus effect, luminous effect, etc. How does 　　 distinguish gems and stones? The brilliance of gems is brought out by their color, luster, transparency, refraction and polishing. Since gemstones often contain inclusions, double crystal lines, lattice structure defects, etc., which cause light interference, diffraction, and scattering, special optical effects will appear in the sun, including starlight effects, cat's eye effects, discoloration effects, etc. Moonlight effect, play-of-color effect, Venus effect, luminous effect, etc.　　　　 Then, how to distinguish gems and stones?　　　　 In nature, among the 2,700 kinds of minerals that have been discovered by humans, there are only more than 200 kinds of gems, which is less than 1/10 of the total.　　　　 gems have many special properties, first of all they are rare. Because it produces very little, it can be described as rare. Then there is the brilliance and magnificence of gems. The color of the gem is extremely gorgeous and pure, and its crystals are uniform, transparent and brilliant. The last is the durability and stability of the gem. Gemstones are durable, hard and wear-resistant, and have high chemical stability. And these properties are not possessed by ordinary stones.　　　　 defines gemstones with strict standards. Only when the following standards are met, can they truly be regarded as reaching the gem-level standards. The color of 　　　　 must be pure, and colorless gemstones must be free of noise. Must be transparent or translucent. Only the finest gems, such as cat's eye or starlight, which are not available but can be encountered, can be opaque because of their special optical effects. The hardness must be extremely high, because the quartz dust suspended in the air may abrade the appearance of the gem. Therefore, most of the gem-level hardness requires Mohs level 4 or higher. Also, only a few gems with special optical effects can lower this standard. The weight of the finished gemstone after polishing should generally be more than 5 carats, and the special precious gemstones should be more than 0.6 carats, and only a few of them can be less than 0.1 carats, such as diamonds.　　　　 The above is the information about gems summarized by the author for you. The information comes from the Internet. If there is anything wrong, please understand. If you need knowledge and understanding of gems, please pay attention to jewelry setting. Jewelry setting is waiting for your inquiry!