Pumice stone, whether or not heat treated

HS code 251310 covers the classification of pumice stone, a naturally occurring volcanic rock that is widely used in various industries. Pumice stone is known for its unique porous and lightweight properties, making it a valuable material in applications ranging from construction and abrasives to personal care products. As a key input for numerous industries, the global trade and production of pumice stone play a significant role in the broader economy.

Pumice stone is primarily extracted from volcanic deposits, where it is mined and processed. The production process typically involves quarrying, crushing, and screening the raw pumice to achieve the desired particle size and consistency. In some cases, the pumice may undergo heat treatment to modify its physical properties, such as increasing its hardness or altering its appearance.

The main inputs required for the production of pumice stone include the raw volcanic deposits, mining and quarrying equipment, and processing machinery for crushing, screening, and potentially heat treating the material. Additionally, energy sources, such as electricity or fuel, are necessary to power the production facilities.

Pumice stone produced under HS code 251310 is used in a wide range of applications, including 680510 Abrasive powder or grain on a base of woven textile fabric, of paper, of paperboard or of other materials, 680520 Abrasive articles on a base of woven textile fabric only, whether or not cut to shape, sewn or otherwise made up, 340499 Polishes, creams and similar preparations for footwear or leather, and 680100 (Setts, curbstones and flagstones, of natural stone (except slate)). The versatility of pumice stone makes it a valuable commodity in both domestic and international trade.