ʻO ka perlite hoʻonui ākea kahi ʻano porous ʻino, keʻokeʻo, mea wehe granular i hana ʻia mai ka pele volcanic vitreous pele ma o ka haki ʻana, hoʻomehana ʻana, hoʻomoʻa ʻana a me ka hoʻonui ʻana. He uuku kona hiki, haʻahaʻa conductivity thermal, maikaʻi kemika kūpaʻa, non-combustible, non-flammable and non-flammable. Poisonous, ʻaʻala, kani leo a me nā ʻano ʻē aʻe.