Incazelo: Itshe lentaba-mlilo elivame ukubizwa ngokuthi i-pumice stone, itshe le-basalt, noma idwala le-lava, liwuhlobo lwezinto ezisebenzayo nezemvelo.Iqukethe inqwaba yamaminerali kanye nama-microelements, njenge-sodium, i-magnesium, i-aluminium, i-silicon, i-calcium, i-titanium, i-manganese, insimbi, i-nickel, i-cobalt ne-molybdenum nokunye.okusetshenziselwa kakhulu ingadi, phansi, udonga, imboni, imboni ye-acqurium. .

Itshe Volcanic Usayizi: 3-6mm, 6-8mm, 8-10mm, 1-3cm, 3-6cm, 6-8cm, 8-10cm, 10-50cm kungenziwa egcizelele.
Intabamliloitsheumbala: obomvu, omnyama.
IntabamliloitsheIsitayela: isigaxa, izinhlayiya, impushana, ishidi