Among the tourmalines, the blue Paraiba is the most precious. ParaÃba is regarded as the king of the tourmaline because of its unusually rare production, unique color, flickering, and unique fluorescent features.
The uniqueness of Paraiba
Among the many new jewels, they are blessed with brilliance. The color of the tourmaline is as colorful as a rainbow, but the Paraiba tourmaline, which has a bright color and exudes neon light, has a unique existence.
Usually, a very small amount of iron, manganese, chromium, vanadium and other elements create a beautiful and varied color of tourmaline. But for Paraiba, the copper element is the root cause of making Paraiba tourmaline so different. The puzzling thing is that this element has never appeared in any tourmaline before. In addition, scientists have also found that it also contains manganese.
Paraiba Tourmaline has an extremely beautiful and fascinating range of colors: emerald green, pool-like lake blue, sapphire blue-violet, purple-red.
The physical properties of Paraiba
Paraiba Tourmaline is named after the green-blue-blue tone tourmaline produced in 1989 in Paraiba, Brazil. Paraiba baci has a specific gravity of 3.06, a refractive index of 1.62-1.64, a birefringence of 0.018, a Mohs hardness of 7-7.5, a composite boroic acid of various metal elements such as copper and manganese, and a hexagonal/hexagonal crystal. Department, no cleavage, staggered or shell-like fracture, glass luster.
The origin of Paraiba
A team led by gemologist Heitor Dimas Barbosa in the 1980s, after years of exploration and excavation, was discovered in Paraiba, Brazil, and was named Paraiba.
For the first time, these beautiful gems excavated in the province of ParaÃba in Brazil are worthy of the rare and blue light. Its unique color is due to the copper content of the gemstone. Since 2003, this tourmaline has been developed in Africa, especially in Mozambique and Nigeria.
The value of Paraiba
Really produced in Brazil's Paraiba Tourmaline, since the early 1990s, the price is no less than $2,000 per carat.
According to the US GIA standards, the value of other tourmalines is not as high as that of ParaÃba, even the most valuable red tourmaline and green tourmaline. Now the superior ParaÃba tourmaline, which is 3 to 5 carats in size, costs as much as $10,000 per carat.
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