jewelry doll stand wholesale How to distinguish between natural tourmaline and other color gems

sterling silver wholesale jewelry in united states As an important member of the colored gemstone family, tourmaline has become one of the well -known color gems. Its colorful colors and moderate prices have become the first choice for people who love color gems. In the international color gem market, natural tourmaline Outside of gems, there are also artificial tourmaline to satisfy some people.nSo how do people who love tourmaline differently distinguish between natural tourmaline and other colored gems and tadpole tourmaline? Today, Dacheng's round jewelry tells some common methods: tourmaline, wide color, easy to confuse some other gems in appearance, but there are still quite simple methods to identify. The two keys of the appraisal are the strong discounts and binary colors of hydrogen. The two -way color is very strong. Often, you can see that the refractive index can be seen near 1.624 and 1.644 with the naked eye. The high index value is fixed. Within this refractive index range, there are no other common transparent gems that have such a large compromise. Light green tourmaline and olives are not easy to distinguish. Olives are also high, but the index of olives is 1.654-1.690, which is still easy to recognize. The medium green to dark green tourmaline is strong in two directions, which is easy to distinguish. Some sink, especially the purple pyroxyl, looks like tourmaline in appearance. Their proportion is similar, and the refractive index also has a roughly the same position on the refraction dial. If it is carefully tested, it is not difficult to find their differences. The refractive index of Zili Pyramin is 1.660 to 1.676. But low and high value change with it on the hemisphere. The high value of the tourmaline is kept fixed near 1.65. Tourmaline may not be distinguished from several varieties of green pillars. This is only when there is no detection instrument, or even if it is not used, there will be errors. The refractive index and proportion of green pillars are obviously small. It is easy to divide the tourmaline and emeralds with binary color and severe folding. If the refractive index of the gem is in the range of tourmaline, the appearance is not clear from the tourmaline. There are some of the following gems, such as yellow jade, phosphorus, glass and red pillar stones. Huang Yu can be distinguished. Tourmaline floats in the proper liquid metal iodine, and yellow jade sinks. Glass is single refraction, which is different. Glyphite and yellow jade are small, and they have a very weak double shadow, while the tourmaline double shadows are very strong. To distinguish between tourmaline and red pillar stones, the refractive index must be carefully measured: the high value of the red pillar stone is not fixed, while the tourmaline is not fixed below 1.644. In addition, the red pillar absorption line is helpful for identification, especially when there is an interference picture, check the raw materials. Beijing Dachengyuan Jewelery Bank is a professional color gemstone business agency integrating research and development, production, processing, cultural promotion and wholesale and retail. Retail: emeralds, tourmaline, rubber, sapped, transparent pirates, sea sapphires, Topa stones, olives, yellow crystals, amethyst, tea crystal, garnet, tanzanite, green amethyst, lemon crystal, etc. Various finished products and nude stones.nLabor rosewood, Hainan Huanghuali, sandalwood, golden silk nanmu, agarwax, beeswax.