Bayani: Dutse mai aman wuta wanda aka fi sani da pumice ko porous basalt, wani nau'in kayan aiki ne na muhalli da aiki. Ya ƙunshi ma'adanai da ƙananan abubuwa da yawa, kamar sodium, magnesium, aluminum, silicon, calcium, titanium, manganese, iron, nickel, cobalt da molybdenum da sauransu.

Amfani: gini, kiyaye ruwa, niƙa, kayan tacewa, barbecuecarbon, tsarin shimfidar wuri, noman ƙasa, kayayyakin ado da sauran fannoni.

Launi: ja, baƙi. fari
girman: 3-6mm, 6-8mm, 8-10mm, 1-3cm, 3-6cm, 6-8cm, 8-10cm, 10-50cm za a iya keɓance shi. Salo: dutse, barbashi, foda.