Perlite is a versatile and sustainable material with a wide range of uses. It is a type of volcanic glass that is often used in construction, horticulture, and filtration. In construction, perlite is used as an aggregate in lightweight insulating concrete and plaster, providing thermal insulation and fire resistance. In horticulture, perlite is a popular choice for soilless growing mediums due to its excellent drainage and aeration properties. It is also used in filtration applications, such as water and beer filtration, where its high surface area and inert nature make it an ideal choice for removing impurities.