Because there are so many kinds of colors, tourmaline is very close to the colors of many gemstones. For people who are less exposed to this type of gemstone, it is really difficult to distinguish at first glance; there are many gemstones with similar star faces to tourmaline, which are more likely to cause Troubled are quartz amethyst, citrine, smoky quartz, or ruby of rubellite and corundum, yellow-green tourmaline and peridot, blue tourmaline, Topaz and aquamarine. しかし, these gems all have different gem characteristics, which can be easily distinguished by basic tests such as refractive index and specific gravity. しかし, the simplest difference is the strong pleochroism of tourmaline, which can be easily seen from different directions. The characteristics of chromaticity are obviously different in color depth and color tone. This is the fastest way to distinguish.
The earliest tourmalines were produced in California and Maine in the United States. Green tourmalines in Maine were mined as early as 1820, and pink tourmalines in California gradually became tourmaline producing areas in 1870. ブラジル, the famous kingdom of colored gemstones, is currently the world’s most important tourmaline producer. The rich and bright tourmalines produced are the best-selling products on the market. Other places of origin include India, パキスタン, ミャンマー, スリランカ, Madagascar, Kenya, Mozambique, Tanzania and Russia.
There is no synthetic tourmaline on the market, mainly because its chemical composition is too complicated; but there are many glass products that imitate the color of tourmaline. These glass imitations are easy to identify with the naked eye, because the glass is single refraction and the tourmaline is double. Refraction, and the pleochroism of tourmaline, is that glass replicas cannot produce natural effects. The color of glass products is generally more rigid and very different from the rich and lively hue of tourmaline.