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Natural Tanzanite gemstone is a mix of grey, green, brown, and blue colors. The gem achieves its blue color through heat treatment. Most of the Tanzanites we see in the market are heated. The big question is does Tanzanite Heat affect Tanzanite quality?
Heating can occur naturally before the gem is mined. The earth’s thermal vents have been heating Tanzanite deposits for millions of years hence some gems are mined being already blue in color. After mining, the gems are usually heat treated regardless, in order to remove any residual unwanted colors.
Natural Tanzanite gemstones can also be heat-treated to remove the brownish color and leave behind the blue and violet that we have all come to adore. Heating is done in temperatures ranging from 400 to 600 degrees centigrade for about an hour.
La Tratamiento térmico de la tanzanita is very mild compared to the heat treatment of other gems like rubies and sapphires. Such gems can be heated to temperatures between 1000 and 1800 degrees centigrade and held at those temperatures for days or weeks.
Tanzanite’s color change through heating is not reversible and will remain unaffected by cutting and polishing. Be warned the color does not signify Tanzanite quality.
While heat treatment of Tanzanite may result in a more favorable color, it does not enhance the grade or value of the gemstone. If a piece of Tanzanite was medium-grade, heating will not enhance it to a top-grade Tanzanite. Heat treatment does not affect Tanzanite quality.
El valor de la tanzanita seguirá dependiendo de otros factores además del color. Estos son los 4 Cs de Tanzanita. Along with color, there are Carat, Cut, and Clarity factors that determine the valor de la tanzanita.
The heating does not change the original color of this rara gema azul. Sólo elimina el eje rojo/marrón y deja el color azul/violeta deseado. Si la piedra era originalmente de color azul pálido, el calentamiento no la convertirá en un azul más profundo.
Cuando se calienta una piedra de grado medio que normalmente es de color marrón claro, se convertirá en azul/violeta pálido. Cuando se calienta una piedra de grado superior que normalmente es de color marrón intenso, se convertirá en azul/violeta intenso después del calentamiento.
The main difference between a heated and unheated gem is the removal of the yellow color due to heating. However, it is known in the mining industry that some Tanzanite has been naturally heated and may show no yellow color when extracted.
Técnicamente hablando, todas las gemas se calientan. Ya sea a través del calentamiento de la ventilación térmica antes de la extracción o después de la extracción en las joyerías comerciales. Tratamiento térmico es una práctica común y que debe esperarse.
Esta práctica se remonta a siglos atrás. El tratamiento térmico es básicamente una continuación de los procesos de calentamiento que se producían en la tierra. En el tratamiento térmico actual, las piedras se calientan a temperaturas muy elevadas, con lo que se acelera el proceso de calentamiento que habría durado años si las piedras se dejaran en el suelo.
Only a very small amount of untreated gems with perfect color are found in the mine. This type of naturally blue Tanzanite has a much greater demand in the market as they are rare.
Without heat treatment, the world would be with fewer colored gemstones. Heating allows us to change off-colored stones into beautiful-colored ones.
It is currently impossible to scientifically test the nature of the Tanzanite’s treatment, whether naturally heated or man-heated. Since all gems have been heated in one way or another, there is no effect on price. It is a common assumption that all gems have been heated at some point.
Dicho esto, ofrecemos en nuestra tienda online una variedad de joyas de tanzanita natural de primera calidad para que pueda comprar a su conveniencia. Somos distribuidores de tanzanita de confianza que extraen, producen y venden sólo productos de la mejor calidad a nuestros clientes.
