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Etimologi
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kategori liyane
obsidian punika kaca vulkanik alami kawangun minangka rock igneous extrusive. diprodhuksi nalika lahar felsic extruded saka gunung mbledhos ndingin kanthi cepet karo wutah kristal minimal
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
awet rock, medium atose rock
theralite punika rock hylocrystalline igneous plutonic dumadi saka augite, olivine, plagioclase calcic lan nepheline
saka basa Yunani kanggo nguber
rock grained nggoleki, rock opaque