Properties of Obsidian lan Picrite
ukuran gandum
ora ditrapake
grained nggoleki
rengat
conchoidal
ora rata
tilas
putih
putih, greenish putih utawa abu-abu
porosity
banget kurang keropos
kurang keropos
luster
vitreous
subvitreous kanggo kurang
kateguhan
ora kasedhiya
2.1
tartamtu gravitasi
2.6-2.7
2.75-2.92
Kapadhetan
2.6 g / cm 3
1.5-2.5 g / cm 3
resistance
tahan panas, impact tahan
tahan panas