1, divided by color
The composition and color of tourmaline are very complicated. The international jewelry industry basically divides tourmaline into commercial varieties according to color. The brighter the color, the higher the value.
Blue tourmaline: general name for light blue to dark blue tourmaline. Blue tourmaline is the most valuable color in tourmaline because of its rarity. Blue tourmaline is produced in yellow clay of weathered granite in Siberia, Russia, and also found in Brazil, Madagascar and the United States.
Red tourmaline: the general term for pink to red tourmaline. Red is the best tourmaline, with purple and rose. It is called Ruby, which is also called "Baby Face" in China. But in nature, brown, reddish brown, crimson and so on are produced more, and the color tone changes greatly. At the same time, the specific gravity of tourmaline will change with the color; Deep red has a higher specific gravity than pink.
Brown tourmaline: dark in color and rich in chemical element magnesium. Brown tourmaline is mostly produced in Sri Lanka, North America, Brazil and Australia. (The English name of brown tourmaline comes from Drewe, Austria. )
Colorless tourmaline: Colorless tourmaline is very rare, and only a small amount is produced in Madagascar and California. It should be noted that some colorless tourmalines on the market are made of pink tourmalines after heating and desalting. The English name of colorless tourmaline comes from the ancient Greek word "achroos", which means colorless.
Green tourmaline: Green and yellow tourmalines are the most common among all tourmaline color variants, so their value is not as good as blue and red tourmalines. Green tourmaline is mostly produced in Brazil, Tanzania and Namibia, while yellow tourmaline is distributed in Sri Lanka.
Multicolor tourmaline: Because tourmaline ribbons are very developed, red and green ribbons or tricolor ribbons often appear on a crystal. Common red and green gems, commonly known as "watermelon tourmaline", are deeply loved by collectors and consumers.
2, according to the special optical effect.
Tourmaline cat's eye: when tourmaline contains a large number of parallel fibrous and tubular inclusions, it can show cat's eye effect when ground into arc gems, which is called tourmaline cat's eye.
Color-changing tourmaline: tourmaline with obvious color change, but rare.
Efficacy and function of tourmaline
I. Watermelon tourmaline Watermelon tourmaline:
Friends with poor sleep quality and bad popularity can buy watermelon tourmaline to help them sleep.
Watermelon tourmaline in a crystal has the characteristics of blue-green infrared. Tourmaline that looks like watermelon. Because of its name, the quantity is scarce, so it is more expensive. It is said that the watermelon tourmaline was placed under the pillow where Empress Dowager Cixi slept.
1, which helps to eliminate all conflicts, contradictions and complex feelings in the heart and make people have a happy mood.
2. People in complex relationships, interest disputes or emotional conflicts will help to resolve myths and see the truth; For men and women who are affectionate, promiscuous and often have emotional entanglements, it is helpful to get rid of multi-party relationships, so that they can feel at ease and find true love.
3. Public relations personnel, salesmen, shop assistants and receptionists wear watermelon tourmaline, which is helpful to achieve both ends, is exquisite in all aspects, and is easy to promote business, strengthen communication and coordination, handle complex situations and get a satisfactory result.