Properties of Obsidian lan Quartzite
ukuran gandum
ora ditrapake
grained medium
rengat
conchoidal
ora rata, splintery utawa conchoidal
porosity
banget kurang keropos
kurang keropos
cleavage
non-ana
indiscernible
kateguhan
ora kasedhiya
1.9
tartamtu gravitasi
2.6-2.7
2.6-2.8
transparan
tembus
transparent kanggo Translucent
Kapadhetan
2.6 g / cm 3
2.32-2.42 g / cm 3
resistance
tahan panas, impact tahan
tahan panas, impact tahan, meksa tahan, nyandhang tahan