Gemstones Guide.

Gemstone Name : Alexandrite .

Description :
A variety of chrysoberyl. Lusture is vitreous to greasy.Crystals are transparent.Colour is green by day and red in artificial light.

Colour :
The colour is caused by chromium

Hardness : 8.5; Specific gravity : 3.7

Found in : Rhodesia

Gemstone Name : Emerald.

Description :
Crystals are small with inclusions.

Colour :The colour is dark green to grass green.The colour is due to the presence of Chromium.

Hardness : 6; Specific gravity : 2.4 to 2.9

Found in : South africa, Brazil and Coloumbia.

Gemstone Name : Aquamarine.

Description :
It is usually step cut.

Colour :The colour is due to the presence of iron.

Hardness : 8; Specific gravity : 2.7

Found in : Brazil, Madagascar,South Africa and USA.