Along with Opal, Tourmaline is the birthstone of October and the zodiac stone of Libra. Traditionally, it is given as a gift on the 8th wedding anniversary. These stones are widely used in healing purposes.
Among all the other gemstones, Tourmaline is the most colorful. These stones are found in almost all places but they are mostly mined in Brazil and Africa.
Let us learn more about Tourmaline:
Tourmaline is a semi-precious stone and a large group of boron silicate minerals. As these bright and beautiful gemstones come in almost all colors, they are widely known and valued by the people. Scientifically, these stones are a group of minerals related to their physical and chemical properties.
October-born babies are passionate, loyal, charming, kindhearted, and friendly people. Mostly they are daydreamer and opinionated. These fascinating traits make Tourmaline fitting to be the birthstone of October.
In the early 1700s, Tourmaline was first discovered by Dutch traders off the West Coast of Italy. The derivation of the word Tourmaline was from Singhalese word "Turmali", which means "mixed color gemstone".
During the 1800s, scientists discovered that these stones were their own species of mineral but before that, they were believed to be Emeralds.
Tourmaline is mostly produced in Pegmatite (an igneous rock, formed underground). They contain hot liquid that is full of different kinds of minerals and when the hot liquid cools down and crystallizes, Tourmaline is formed. These stones take many years to form within the surface of the earth.
The chemical formula of Tourmaline is (Ca, K, Na,)(Al, Fe, Li, Mg, Mn)3(Al, Cr, Fe, V)6(BO3)3(Si, Al, B)6O18(OH, F)4. The hardness of this stone is 7-7.5 on the Mohs scale.
There are three main types of Tourmaline which are given below.
The value of Tourmaline depends on the richness of their color, variety, and quality. Among all the other variety, Paraiba is the most expensive but their price is hard to define as it is extremely rare. The price of other varieties can range from $50-$750 and $1000 per carat.
The Ethereal Carolina Divine Paraiba is the largest Paraiba Tourmaline ever discovered weighing 191.87 carats. This beautiful stone is said to be worth $25 million - $125 million.
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