Pumice Stone is a volcanic rock that consists of highly vesicular or perforated volcanic glass.Pumice Stone is created when super-heated and highly pressurized rock is violently erupted from a volcano.

The unusual foamy configuration of pumice happens because of simultaneous rapid cooling and rapid depressurization. Pumice Stone float on water. Pumice Stone commonly originated from Indonesia and Turkey. Different sizes of Pumice Stones are available, such as 2-4 cm which known as small Pumice Stone. 3-5 cm which known as medium size Pumice Stone.

One of such washing is known as stone wash. In stonewashing the worn-out look is given purposely. The fabric is washed along with pumice stones. The stones and denim are spun together in large industrial washing machines. The longer they are spun together lighter the colour of the fabric with better contrasts would result. The time duration of this procedure is set beforehand so as to avoid the tear and wear of the fabric. Thereafter, the fabric undergoes various other processes of rinsing, softening and finally tumble-drying. These stone-washed fabrics are used for different purposes — garment making as well as for upholstery purpose.