Tourmaline is the handicraft name of Tourmaline, and Tourmaline is a kind of jewelry of Tourmaline family. It is a borosilicate crystal, which contains chemical elements such as aluminum, iron, magnesium, sodium, lithium and potassium, and presents various colors. The seven color grades of tourmaline are red, blue, green, multicolor, brown, colorless and black from high to low. Among them, bright red tourmaline and bright blue tourmaline have the highest price, followed by emerald tourmaline, such as colorless and black tourmaline, whose color and price are not as good as the previous ones.
Among them, red tourmaline is known as "children's face" in China, and purple and rose are the best. Blue tourmaline is not common in the market and has become the most expensive color in tourmaline. Mainly produced in the yellow mud of Siberian granite, but also in Brazil and Madagascar.
Tourmaline of other colors, because of its color and texture, is more or less inferior to the previous ones. As for the black tourmaline, it is a variety rich in iron or titanium, and it is also the most common kind of tourmaline. Because of its large output and low grade, its price is lower.
Tourmaline maintenance method
1, tourmaline jewelry should not be put in the same drawer as other jewelry to avoid friction and wear. Because the Mohs hardness of tourmaline is 7-7.5 higher than that of crystal, but lower than that of diamond, ruby and sapphire, that is to say, if it is placed with diamond, it will scratch tourmaline, and if it is placed with crystal, it will scratch crystal and affect the beauty of other ornaments.
2. Tourmaline has the function of "vacuuming". After it is left for a period of time, many tiny dust will be attached to its surface. After degaussing and purifying, gently wipe with a soft cloth before wearing. Never use a feather brush for cleaning.
3. If you wear tourmaline for a long time, it will be contaminated with oil and sweat secreted by the human body, thus losing its luster, so it is best to clean it once a month. The cleaning method is very simple, just soak it in clear water for a few hours, and then wipe it with a soft absorbent cloth.