Zoisite Gemstone
The gemstone has a hardness of 6 5 to 7 on the mohs scale which is similar to other zoisite gemstones despite the presence of ruby crystals which have a hardness of 9 on the mohs scale. Zoisite occurs as prismatic orthorhombic 2 m 2 m 2 m crystals or in massive form being found in metamorphic and pegmatitic rock.
Zoisite s hardness ranges from 6 5 to 7 on the mohs scale whereas ruby has a hardness of 9.
Zoisite gemstone. Zoisite may be blue to violet green brown pink. Ruby zoisite is a mix of opaque red ruby in green zoisite from tanzania. Tanzanite is strongly trichromatic appearing alternately sapphire blue violet and burgundy depending on crystal orientation.
The gemstone members of the group are tanzanite thulite and anyolite. High quality ones are handled as jewelry. Ruby zoisite color facts power mythology history and myths.
Although ruby zoisite is not fine ruby it eventually found a purpose in carvings and cabochons. Gem stone quality specimens have only recently been found. Today it is one of the most colorful ornamental gemstones available and the abundance of gemstone material makes it very affordable even in larger sizes.
That find eventually led to the marketing of one of the most popular gemstones of our time. Zoisite first known as saualpite after its type locality is a calcium aluminium hydroxy sorosilicate belonging to the epidote group of minerals its chemical formula is ca 2 al 3 si o 4 si 2 o 7 o oh. It was originally called saualpite.
Tanzanite can also appear differently when viewed under alternate lighting conditions. Zoisite changes its name according to the color and the components. The mineral zoisite is named after the collector zois.
The most famous one is tanzanite with purplish blue color. In 1967 a blue to blue violet gemstone quality variety of zoisite was discovered in tanzania and was subsequently named tanzanite. Also known as anyolite it has pretty contrast and is utilized as a small gemstone being polished into cabochons and carved into ornamental shapes.
There are three gemstone members of the zoisite species. Because of its opaque nature ruby zoisite is rarely used in high end jewelry but is often used in artisan jewelry and ornamentation pieces. But zoisite turned out to be an important gemstone mineral when a new variety of zoisite was discovered in tanzania in 1967.
Zoisite is a mineral that includes several gem varieties. Other than that types of zoisite called anyolite and thulite are known. A variety known as ruby zoisite which is green zoisite associated with opaque red ruby and often black amphibole streaks is used as a carving gemstone as well as a minor gem.
Tanzanite thulite and anyolite. There is also a gemstone called ruby in zoisite so please look for that one too. It was first found in the sau alp mountains in austria in 1805.
The most important and well known is tanzanite a sensational blue gemstone the variety thulite is used as a minor pink gemstone.
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