Blue tourmaline is second only to red tourmaline, which is mainly produced in yellow clay of weathered granite in Siberia, Russia.
Blue tourmaline is the second color after red tourmaline, which is the general name of light blue to dark blue tourmaline. This tourmaline is mainly produced in the yellow clay of weathered granite in Siberia, Russia, and some blue tourmalines are also produced in Brazil, Madagascar and the United States.
The black tourmaline with the worst color grade is dark black to pure black. It is an opaque tourmaline, which is generally rich in iron or titanium and is also the most common tourmaline.
Related introduction:
Tourmaline, the handicraft name of Tourmaline, is a kind of jewelry in Tourmaline family. It is a borosilicate crystal, containing chemical elements such as aluminum, iron, magnesium, sodium, lithium, potassium and so on, showing a variety of colors.
The English name of tourmaline comes from the ancient Sinhalese word Turmali, which means "mixed gem". 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. Pay attention to color, transparency and purity when purchasing.