What trade term is used for blue tourmaline?

The term "Indicolite" is used to refer specifically to blue tourmaline. This type of tourmaline exhibits a range of blue shades, often with a slight green hue, which can influence its color quality and perception. The origin of the term comes from the Greek word "indikos," meaning blue.

Tanzania is noted for being a significant source of various gemstones, including tourmaline, but it is not the trade term for blue tourmaline itself. The trade terms "Copper" and "Blue Zultanite" refer to entirely different materials and phenotypes. Copper does not pertain to the color or type of tourmaline, while Zultanite is a color-change garnet, not associated with tourmaline at all. Understanding these distinctions clarifies why "Indicolite" is the accurate term for blue tourmaline and enhances your knowledge of gemstone nomenclature.