Perlite rhymes with:
gaslight, halite, hypolite, raphaelite, arganbright, argenbright, barite, bauxite, bouknight, buchheit, burright, cortright, couponite, crosswhite, ferrite, gaslight, gesundheit, halite, hebenstreit, hessite, hittite, hypolite, kernite, landviewite, leifheit, ludite, nephrite, previte, pyrite, raphaelite, searight, semite, stutheit, termite, tracheophyte, transvestite, weisheit
Perlite sounds like:
paralleled, parlato, parlayed, parlett, parlette, paroled, peralta, perrault, perreault, preholiday, prelate, prelude