Silicon and oxygen are the earth's two most abundant elements and together they make silica,
one of the earth's three most common rock forming minerals.
Silica occurs in three main crystalline forms. The principal occurrence is as the mineral quartz
but it also occurs in other rarer
Marble is a non-foliated, granular metamorphic rock. That is formed by the metamorphism of limestone and dolostone. In the global market Marble is one of the seven natural stones which have a massive demand. Marble has long been highly valued for its beauty & strength; Marbles are