The main varieties of tourmaline are:
Divided by color: the composition of the tourmaline is complex and the color is complex and variable. The international jewellery industry basically divides commercial varieties into tourmalines by color.
Red tourmaline: the general term for pink to red tourmaline. Red is the highest value among the tourmalines, among which the best is purple and rose red, and it is called red tourmaline. In China, there is the name of “baby faceâ€. However, the natural world produces more brown, maroon, and deep red, and the color tone changes greatly.
Green tourmaline: the general term for yellow-green to dark green and blue-green, brown-colored tourmaline
Blue tourmaline: a general term for light blue to deep blue tourmaline.
Multicolor tourmaline: Since the tourmaline ribbon is very developed, red and green dichroic ribbons or trichromatic ribbons often appear on a crystal; the ribbon can also form a color circle from the inside to the outside according to the Z axis, and the inner infrared green It is called "Watermelon Tourmaline".
Divided by special optical effects:
Tourmaline Cat's Eye: When the tourmaline contains a large number of parallel fibrous and tubular inclusions, the cat's eye effect is called a tourmaline cat eye when it is ground into a gemstone.
Color-changing tourmaline: a clear-eyed tourmaline, but rare.
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