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Barite color stone basic properties table

Name Origin The name is derived from Greek baros, meaning heavy, because of its high specific gravity
Chemical Formula BaSO4 + Ca, Sr
Color White, greenish, yellowish to brown, blue, green, raddish. Maybe color zoned
Fracture Uneven, Brittle
Hardness 3 - 3.5 on the Mohs scale
Crystal System Orthorhombic. Tabular crystals, aggregates and rosettes; massive, granular, fibrous
Cleavage Perfect 1 direction
Specific Gravity (SG) 4.5
Lustre Vitreous to resinous; pearly on cleavage
Pleochroism weak if crystal is colored
Brown crystal: Straw yellow/wine yellow/violet
Yellow crystal: pale yellow/yellow-brown/brown
green crystals: colorless/pale green/violet
Note: Massive white barite looks like marble and could be used for decorative purposes. Faceted gems are very difficult to cut. The perfect cleavage makes wear very risky, and low hardness would also prevent use in jewellery.
Barite is the main source to extract barium (by electrolysis or by heating in vacuum with aluminum or silicon), a metal which is used in wide range of industries. For instance, in metallurgy it is used in the walls of vacuum tubes to absorb unwanted residual gases during purification. Barite is also used as deoxidizer in copper refining industry. 
White barite stone
Barite Lanark Ontario Canada.
Barite mineral
Barite crystals
Barite stone
Barite stone
Photo Credit: www.shutterstone.com