Properties of Pumice lan Variolite
ukuran gandum
grained nggoleki
ora ditrapake
tilas
putih, greenish putih utawa abu-abu
putih kanggo werna abu-abu
porosity
Highly keropos
kurang keropos
luster
earthy
ora kasedhiya
cleavage
sampurna
ora kasedhiya
tartamtu gravitasi
2.86
2.8-3
Kapadhetan
0.25-0.3 g / cm 3
2.9-3.1 g / cm 3
resistance
impact tahan, meksa tahan
tahan panas, meksa tahan, nyandhang tahan