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Zoisite

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description Zoisite Overview

Zoisite is a calcium aluminum hydroxyl sorosilicate mineral belonging to the epidote group. It naturally occurs in a range of colors and is notably recognized for its transparent blue-violet gemstone variety, known as tanzanite. This highly valued gem variety was first identified near Mount Kilimanjaro in the Merelani Hills of Tanzania. Additionally, a green zoisite matrix associated with red ruby inclusions, commonly called anyolite or ruby zoisite, is also utilized as an ornamental stone.

help Zoisite FAQ

What is the connection between zoisite and tanzanite?

Tanzanite is actually the highly sought-after blue-violet gem variety of the mineral zoisite. While standard zoisite can be found in various colors, the specific transparent blue-violet type is exclusively known as tanzanite.

Where was zoisite's famous tanzanite variety first discovered?

The tanzanite variety of zoisite was first discovered in 1967 near Mount Kilimanjaro in Tanzania. To this day, this specific region in the Merelani Hills remains the only known commercial source of the gemstone in the world.

What is the chemical composition of zoisite?

Zoisite is scientifically classified as a calcium aluminum silicate mineral. It belongs to the sorosilicate group of minerals and is typically found in metamorphic rocks.

Are there any other notable gemstone varieties of zoisite besides tanzanite?

Yes, another well-known variety is ruby zoisite, which is a striking green and red rock composed of green zoisite, black hornblende, and large ruby crystals. It is heavily used in carvings and ornamental jewelry pieces.

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