By Chisom Ibemere
Vesuvianite is a green, brown, yellow, or blue silicate mineral which is also known as idocrase. It occurs as a tetragonal crystal that has been subjected to contact metamorphism. It was first discovered within included blocks on Mount Vesuvius, hence its name. Attractive-looking crystals of Vesuvianite are often carved as gemstones.
Vesuvianite has a specific gravity of 3.4 and a Mohs hardness of 6.5 with a vitreous lustre. Its name “vesuvianite” was given in 1795 by Abraham Gottlob Werner. It is also called “idocrase” which was given by René Just Haüy in 1796.
Vesuvianite may be dull and uninteresting but there are some lustrous and coloured forms that are really outstanding. It may have association with some minerals like Grossular, Calcite, Zoisite , Diopsite etc.
Vesuvianite is a calcium aluminum silicate mineral. It occurs during contact metamorphism or hydrothermal metamorphism of carbonate rocks and may be seen in limestone, dolomite, marble and granulite. It has no significant industrial application but some colorful and quality stones are valued by collectors and cut into gems, or carved into small sculptures.
Well-formed crystals of Vesuvianite are rare, and may be found only in cavities and fractures. Vesuvianite is a brittle material and is suitable for use in jewelry that will not be exposed to abrasion. It is used in making Earrings, pendants, and pins.
It doesn’t undergo any form of treatment.
