Granite,
a holo-crystalline quartz-bearing plutonic rock, has - 10 to 50% of
quartz as its component, the alkali feldspar/total feldspar in the ratio
between 65 to 90%, and the modal concentration of other minerals is less
than 10%. Cutting of granite follows the processing. The cutting of
granite has been made easier by the use of steel abrasives. Use of such
tools enhances cutting of granite, saves time and lends smoother edges.
The granite is cut into thin slabs by multi-blade gangsaws, and using
various types of granite cutting blades available in the market.Granite is available in three main varieties of granite, which are as follows-
Biotite-granite
Includes quartz, plagioclase, biotite and K-feldspar.
Hornblende-granite
Also called Syenitic granite, contains hornblende as well as mica.
Tourmaline-granite
Composed mainly of Tourmaline, this variety of granite exhibits a wide range of colors and is very rarely available as white or colorless variety.
Of these three varieties, Biotite-granite is most prevalent and forms a very suitable building stone for durability and decoration. These rocks, by reason of their massive nature and homogeneous grain, are eminently adapted for monumental and architectural work as well as for massive masonries. Their wide range in appearance and colors – white, pink, red, grey, black, etc. renders the stones highly ornamental and effective for a variety of decorative uses.
Based on the composition, the color and the make of the granite also varies there are various types of granite comprising of over hundreds of shades. Within India itself there are around 200 shades of granite available. To name a few -Tropical Green Paradiso, Kerala White, Pink and Grey Granite, Monumental red granite which is very coarse, Kashmir White, Tiger Skin, Bash Paradiso, Colombo Juparana, Sea Green, Turaiyur Blue, Hosur Gray, Raw Silk, Ruby Red, Fish Belly, Tumkur Pink, Sira Grey, Savan Rose, English Teak, Hasan Green Tiger Black, Chilly Red, Pista Green, Black Galaxy, Daisy Blue, Blue Pearl, Purplish Granite Porphyry, Mokalsar Green, Silver galaxy, Ivory Shine, Tan Brown, Steel gray, China Pink, Sea weed green, Spotty Black, Chilka Blue, Red Pearl, Spotty Ribbon Gneiss, Deep Pink Granite, American/ Cobra / Emerald Green.
