Properties of Obsidian lan Travertine
ukuran gandum
ora ditrapake
grained nggoleki
rengat
conchoidal
splintery
porosity
banget kurang keropos
Highly keropos
luster
vitreous
kurang kanggo pearly
kateguhan
ora kasedhiya
1
tartamtu gravitasi
2.6-2.7
1.68
Kapadhetan
2.6 g / cm 3
2.71 g / cm 3
resistance
tahan panas, impact tahan
impact tahan, meksa tahan, nyandhang tahan