Andradites

Andradite


Andradite is a nesosilicate member of the garnet group that is composed of Calcium Iron Silicate. There are many varieties of this mineral, each being distinguished by color. The green variety, which is sometimes used as a gemstone, is called Demantoid Garnet. The yellow version, which is also used by the jewelry trade, is referred to as Topazolite Garnet, and the black form is known as Melanite Garnet. The crystals grow in one of two types — a 12 sided rhombic dodecahedron or a 24 sided trapezoidal structure. Andradite also occurs in massive form, often in association with mica, chlorite, diopside, and serpentine. It has a vitreous luster and a white streak.

This stone unearths buried secrets. Take this stone with you when mining, beachcoming, or looking for lost objects. Give an andradite crystal to your lover and listen carefully to what he or she reveals to you.

Chemical Composition:
Calcium Iron Silicate
Ca3Fe2(SiO4)3
Color:
Variable
Hardness:
6.5 - 7.5
Specific Gravity:
3.8+
Cleavage:
None
Fracture:
Brittle to sectile
Crystal Structure:
Transparent to translucent; isometric
Luster:
Vitreous
Streak:
White
Occurence:
Arizona, Russia, Italy and California