Limestone, also known as Qing Stone, as described in the poem "A Thousand Blows and a Thousand Cuts from the Deep Mountains," refers to this stone. After being quarried and cut into slabs by stonemasons from the mountains, Qing Stone is widely used for dining table tops in living rooms, or countertops in cabinets. Compared to natural marble, the advantage of Qing Stone lies in its main component being calcium carbonate, which is non-radioactive. Therefore, it is considered a green product for daily home furnishings and is more favored by modern people.

Limestone is a raw material for lime. Besides lime, limestone is also quarried into gravel and coarse sand at stone factories. Gravel is used as an ingredient in cement, while coarse sand is in demand for building construction.

Quartzite is primarily used for crushing river pebbles, cobblestones, granite, limestone, marble, and large blue stone, among various hard stone materials. It is widely employed in multiple fields such as expressways, high-speed railways, rural roads, and construction sand. Quartzite is an ideal material for the construction industry.

Limestone gravel primarily forms in shallow-sea environments. Limestone can be categorized into detrital limestone (transported by running water, deposited to form); bioclastic limestone; and chemical, biochemical limestone. Structurally, it can be further divided into bamboo leaf limestone, massive limestone, and nodular limestone, among others. The main chemical component of limestone is CaCO3, which is easily eroded, leading to the formation of karst landscapes with stone forests and caves. Limestone is the primary raw material for producing lime and cement, and it serves as a flux in iron and steel smelting.

Limestone is widely distributed, uniform in rock texture, easy to mine and process, and is a versatile building material.