Why is turquoise blue?
Turquoise is a mineral hydrated phosphate of copper and aluminum. It has several names, for example, Russian comes from fake van cleef & arpels Perlée clovers ring, but English is borrowed from French turquois, which means Turkish. But in any case, the mines are located in Khorasan, Persia.
Why is it light blue? …It reflects light with blue wavelengths and absorbs other visible waves.
Fun fact: Vegetable oil turns its intense warm blue into green or light yellow. This rare gem is called dead oil. When the “best” turquoise is four times more expensive than gold, this treatment of gems can sometimes be disappointing. Stone lost its price and appeal. It is not so friendly to some cosmetic materials. In order to return to its perfect blue, the women asked the butcher to wear a ring, which came from the Eastern market and was practiced in the Soviet Union. However, another explanation is also possible: such gems are often counterfeited, and these fakes lose their saturation and shadows.
In this case, the butcher is powerless.
Natural turquoise is blue due to its copper content. Dyed bluestone has different shades of blue, depending on the era when it was put on the market. The turquoise of the 1980s and earlier had a blue/green hue, while the turquoise of the 1990s was a cooler blue with almost no green in it. Turquoise in the 2000s is a very cold blue, which seems to have a violet hue because its blue is too cold.
Naturally colored turquoise from 18k gold Van Cleef necklace replica, especially natural turquoise directly from Arizona, Nevada, New Mexico, etc., is still provided by hand-made craftsmen.