India is a leading commercial natural stone producing country in the world, delivering 27% of the total world’s production of stones from its quarries. India is exporting natural stone products worth of $300 million each year. Wikipedia portraits the

We know three main classes of rocks, sedimentary, igneous, and metamorphic. In the Limestone article, we learned how sedimentation occurs and the formation of sedimentary rocks takes place. Today, we are going to know Obsidian rock, which falls in th