Properties of Chert lan Obsidian
ukuran gandum
banget nggoleki-grained
ora ditrapake
rengat
ora rata, splintery utawa conchoidal
conchoidal
porosity
Highly keropos
banget kurang keropos
luster
waxy lan kurang
vitreous
kateguhan
1.5
ora kasedhiya
tartamtu gravitasi
2.5-2.8
2.6-2.7
transparan
tembus kanggo opaque
tembus
Kapadhetan
2.7 g / cm 3
2.6 g / cm 3
resistance
tahan panas, impact tahan, meksa tahan, nyandhang tahan
tahan panas, impact tahan