About Sandstone

Sandstone is a sedimentary rock of sand- sized grains (primarily of sizes 0.0625 mm to 2 mm) of minerals, rock fragments or organic material. Quartz and Feldspar find themselves as the main composition of this natural stone. Topography and large visibility in high cliffs are the major factors in the nomenclature of sandstones. The mineral impurities add to the color of this rock, i.e. tan, brown, yellow, black, grey, pink and white.

It is the most common type of sedimentary rock and despite of its occurrence in almost every part of the world, the Indian sandstone finds its place amongst the top- rated sandstones in terms of quality, usability and finesse.

Application

Being relatively soft and easy to work with, sandstones find their services as common building and paving materials. The natural beauty that they possess makes them suitable to craft the exteriors and interiors of our living spaces.

Some of the most common applications incorporating these natural stones are:

In domestic construction.
As flooring and paving materials.
As grindstones (if the grains are uniform and structure is friable).
For artistic purposes (like ornamental fountains or statues) by artisans- as it is easy to cut and carve.
As solutions for flaming and walling in chemical industries due to acid and alkali resistant properties.

Types of Polishes

The most basic finish entailing cutting the stone manually into desired shape and size. This finish is highly suitable for outdoor applications like flooring and cladding as it is relatively rough that prevents slipping and also imparts a distinct appearance when vertically cladded on walls.

This is a relatively smooth and even surface finish which finds its usage in kitchen countertops and interior flooring and wall cladding.

The name is derived from the fact that the sandstone is brushed with a hard plastic bush or a metal. This process takes away the soft and flat surfaces leaving a worn-out look on the surface.

Diamond disc teeth are used to get this finish wherein the resultant stone as irregularities in surface and is slightly rough. This type of polish is suitable in pathways, paving, steps and driveways.

In tumbling, the edges of sandstone are made smooth by wearing them with relatively stronger yet small sized stones in a drum- like machine.

Air gun is used to blast the surface of sandstone repeatedly with silica in order to obtain this kind of finish. Along with small pores and abrasive surface, this type of polish also lightens the color of sandstone.

This is a shiny (mirror- like) finish wherein the stone is succumbed to an abrasive treatment repeatedly. With this, the porosity gets down to almost zero and true colors of the sandstone are elegantly highlighted.