Tlhaloso: Lejoe la seretse se chesang le tsejoang ka hore ke lejoe la pumice, lejoe la basalt, kapa lejoe la seretse se chesang, ke mofuta oa thepa e sebetsang le ea tikoloho.E na le liminerale tse ngata le li-microelements, tse kang sodium, magnesium, aluminium, silicon, calcium, titanium, manganese, tšepe, nickel, cobalt le molybdenum joalo-joalo. tse sebelisoang haholo serapeng, fatše, lerako, semela, indasteri ea acqurium .

Lejoe la seretse se chesang Size: 3-6mm, 6-8mm, 8-10mm, 1-3cm, 3-6cm, 6-8cm, 8-10cm, 10-50cm ka customized.
Volcaniclejoemmala: khubelu, ntšo.
VolcaniclejoeSetaele: hlama, phatsa, phofo, lakane