Garnet-gemstone

Garnet is not a single mineral,but describes a group of several closely related minerals. Garnet come in a variety of colors and have many different varieties.however, the most widely known
color of garnet gemstone is dark red. when the term "garnet" is used,it is usually connotative of the dark red form,other color garnet are usually given more descriptive gemstone terms.the person who born in January use as birth stone.







Chemical Formula: Have many formulas

Color                    : ,Blue,Green,Red, Green, yellow, orange, brown, pink, purple, gray, black.

Hardness              : 6.5-8.5

Crystal system      : Isometric

Refractive index   : 1.780-1.889

SG                        :  3.5 - 4.3

Transparency        : Transparent 

Double Refraction: .none

Luster                   :  Vitreous

Cleavage              :  none

Mineral Class       : garnet


Sources:

               many country produce garnet.