ukuran gandum
grained nggoleki
coarse grained
rengat
ora rata, splintery utawa conchoidal
ora rata
tilas
putih
cahya kanggo coklat peteng
porosity
Highly keropos
kurang keropos
luster
waxy lan kurang
earthy
cleavage
non-ana
ora duwe aturan baku
kateguhan
1.5
ora kasedhiya
tartamtu gravitasi
2.5-2.8
2.86
transparan
tembus kanggo opaque
opaque
Kapadhetan
2.7 g / cm 3
2.8-2.9 g / cm 3
resistance
tahan panas, impact tahan, meksa tahan, nyandhang tahan
tahan panas