Grossular Garnet

Category  :  Mineral
Hardness  :  7 to 7.5
Gravity  :  3.61 (+.12 -.04)
Reflection  :  1.74
Color  :  light to dark green, light to dark yellow to reddish brown, occasionally translucent to opaque pink. It is also but rarely found in colorless form
Chemical formula  :  Ca3Al2(SiO4)3
Crystal system  :  cubic
Major varieties  :  Hessonite, Green Grossular

The name grossular is derived from the botanical name for the gooseberry, grossularia, in reference to the green garnet of this composition that is found in Siberia. Other shades include cinnamon brown (cinnamon stone variety), red, and yellow.

The more common variety of grossular is called hessonite from the Greek meaning inferior, because of its inferior hardness to zircon, which the yellow crystals resemble. Grossular is found in contact metamorphosed limestones with vesuvianite, diopside, wollastonite and wernerite.

A highly sought after variety of gem garnet is the fine green Grossular garnet from Kenya and Tanzania called tsavorite. This garnet was discovered in the 1960s in the Tsavo area of Kenya, from which the gem takes its name.

Hessonite

This stone represents 'Rahu' ( North Node ) and hence brings luck when used during its rule in your life. It favors people who wish to be employed overseas and is believed to heal illnesses related to the intensive, skin and veins. The most auspicious time for commencing the use of this stone is within an hour of sunrise on a Saturday. It is worn on the ring finger.

Green Grossular

It is a light, verdant, or dark green, similar to the color of the better green tourmalines. It has a good luster. These gems are often given a round or pear-shaped mixed cut, or occasionally a brilliant cut, are generally small, rarely exceeding one carat and never more than a few carats. Being single refractive, green grossular is distinguished from green tourmaline.


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