1. Stones

According to the mode of origin, rocks are divided into three principal classes or groups, namely:

Rocks are classified in four different ways:

Stones are obtained from rocks. A rock represents a definite portion of the earth’s surface. They occur almost everywhere in mountainous and hilly areas. It has no definite chemical composition and shape. Stones are available in large quantities in different parts of our country. It is necessary to know the availability of good stones in […]