1. Acrylic and plastic products can be distinguished from the touch, temperature and hardness of the hand. In addition, acrylic and plastic are easy to cause distortion and refraction of light. Generally, it is not difficult to distinguish, so such counterfeit products are gradually becoming rare. 2. Glass products, this is clear as water, no texture, and low hardness, single refractive index, mixed with bubbles, is also very well resolved. 3. Melting crystal refers to the crystal synthesized by domestic crystal slag. It is like glass, but it has been made into balls of seven or eight centimeters to ten centimeters. It is very beautiful and beautiful, but it has low refractive index and low hardness. Use a polarizer to distinguish. 4. Crystal glass is actually "lead glass". Glass products with lead metal are the most popular on the market. Because of their good refractive index and dispersion rate, they are dazzling and dazzling. They are most suitable for decoration and decoration, but not suitable. For spiritual use. Generally, it can be judged by visual observation. 5. Artificial crystal, also known as "nutrients", the original stone does not have hexagonal crystals, which is the easiest place to judge; but if it is ground into a finished product, it is not easy to discriminate by the above method, so we must use the "ultraviolet spectrometer" In order to distinguish between true and false. The most popular in the market are colorless and transparent white crystal, amethyst, citrine, and water blue crystal counterfeit. It is recommended that friends, when encountering controversial crystal ore, it is best to send a fair third person, such as an appraisal office, to identify and distinguish, but not much, but there is professional protection. If necessary, even send more than two appraisers to identify. It is best to be able to purchase the "original stone" and see its crystal shape, growth pattern, and symbiotic minerals. In addition, it is the purchase of crystal ore containing "Inclusion". The average person mistakenly calls it an impurity or a cockroach. This is the best proof of "growing in nature". Women's Fashion Long Sleeve & sweater Cotton Sweater,Casual Silk Blouse,Long Sleeve Sweater,Stripe Crewneck Sweater Shaoxing Holly Garments Co., Ltd. , https://www.hollygarment.com