Mchenga wa Quartz ndi mchere wofunikira wamafuta. Ndizinthu zopanda mankhwala owopsa ndipo zimakhala ndi ntchito zosiyanasiyana, monga: galasi, zoumba, zokanira, zoyendetsa madzi, zoyendetsa sitima, zomangamanga, mafakitale a mankhwala ndi mafakitale ena. Chifukwa sizowopsa, palibe vuto ndi njira iliyonse yamayendedwe. Komabe, mawonekedwe a mchenga wagalasi ndi tinthu tating'ono komanso osakhazikika. Pambuyo pa kuphikidwa pa kutentha kwakukulu kwa pafupifupi 520-580, mchenga wa galasi umasakanikirana ndi galasi lopangira galasi kuti likhale losafanana, lomwe limagwiritsidwa ntchito kwambiri popanga magalasi. Mchenga wagalasi umagawidwa kukhala mchenga wagalasi wachikuda ndi mchenga wagalasi wowonekera. Maonekedwe a mchenga wagalasi wowonekera ali ngati shuga woyera. Mchenga wagalasi makamaka chifukwa cha kukongoletsa kwa galasi pamwamba, monga magalasi, vases, lampshades ndi zina zotero. Mchenga wagalasi wamitundu, womwe umadziwikanso kuti mchenga wagalasi wachikuda, ungagwiritsidwenso ntchito ngati chokongoletsera.
