Let’s take a look at some of the quality indicators for tourmaline.
1, color
The composition of the tourmaline is complex and the color is complex and varied. The international jewellery industry basically divides the commercial variety according to the color of the tourmaline. The more the color, the higher the value. Blue tourmaline is now the most valuable color in the tourmaline because it is rare. Red tourmalines are best in purple and rose red. The brown tourmaline is darker in color and rich in chemical element magnesium. Colorless tourmaline is very rare, and some colorless tourmalines on the market are made by heating and bleaching pink tourmaline. Green tourmaline and yellow tourmaline are the most common of all tourmaline color variants, so the value is also inferior to blue and red tourmaline. Multicolor tourmaline is commonly known as “watermelon tourmaline†and is very popular among collectors and consumers. Color is the key to dividing the tourmaline level: the more pure, intense, and better the color. Generally, the red tourmaline can be divided into five levels: deep red, red, medium red, light red, and light red. The green tourmaline is divided into five levels: dark green, green, medium green, light green, and light green.
2. Transparency
This is the primary condition for quality tourmaline and an important criterion for reflecting the value of tourmaline. Under the naked eye, the transparency of tourmaline is generally divided into transparent, translucent, translucent, sub-transparent, and opaque grades. Some red tourmalines in the market, the particles are very expensive but very cheap, because the transparency is not up to the gem level.
3. Cut
The cut determines the fire of the tourmaline, and also determines the value of the tourmaline to some extent. The tourmaline classification of tourmaline can be used as a reference for diamond standards.
4. Clarity
The tourmaline contains a lot of impurities and ice cracks. Based on the naked eye, the purity of tourmaline can be divided into extremely difficult to see, difficult to see, visible, easy to see, and easy to see. Among them, the first and second grades are high quality gemstones. The high clarity of the tourmaline is extremely rare, and the high quality of the tourmaline can greatly enhance the value of the tourmaline.
5. Quality
According to the quality, the tourmaline grade is divided into 1~2 carats, 3~5 carats, 5~10 carats, and its value is multiplied by 5 carats. Among them, the tourmaline of more than 15 carats is the most popular and the most collectible.
The evaluation criteria from the above generally refer to the gem-quality gemstones, but in general the tourmaline bracelets are not up to the gem level, and the gem-grade itself is very rare. However, the bracelet can also refer to the above criteria. The tourmaline is extremely rich in color and is known as the rainbow that falls into the world. The tourmaline bracelet is also popular among the majority of gemstone lovers. In recent years, the price of tourmaline has soared, and a series of high-quality tourmaline bracelets with rich colors and good transparency have become very expensive.
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