Ruby-gemstone

Ruby is distinguished for its bright red color, being the most famed and fabled red gemstone. Beside for its bright color, it is most desirable gem due to its hardness, durability ,luster, and rarity. Transparent rubies of large sizes are even rarer than Diamonds. Ruby is the red variety of the mineral corundum. Sapphire , the other gem variety of corundum, encompasses all colors of corundum aside from red.in essence, ruby is a red sapphire, since ruby and sapphire are identical
in all properties except for color. however, because of the special allure and historical significance, ruby has always been classified as an individual gemstone, and is never identified as a form of sapphire.ruby is a very attractive gem this stone have magical attractive.the person who born in July he use as birthstone . its provide spiritual help or secure from sins .its beautiful gemstone.mostly kings or queens use this .ruby have different shapes.



Chemical Formula: Al/2O/3

Color                    : Red

Hardness              : 1.76-1.77

Crystal system      : Hexagonal

Refractive index   : 1.76-1.77

SG                        : 3.9 - 4.1

Transparency        : Opaquue

Double Refraction: .0008

Luster                   :  Vitreous to adamantine

Cleavage              :  None

Mineral Class       :  Corundum

Sources:
            Bangkok ,Thailand , Burma ,India, Pakistan, etc.