naturally occurring volcanic glass

OBSIDIAN
List of words for the clue naturally occurring volcanic glass from the crossword:
LAVA ORGANIC INHERENT ATRIA STAGED SNOW RAREST PETROLEUM MIRAGE MADE ION EOLITH RIM PUMICE ATRIUM BORON RIMS SAL AGATE
WordClue
MAARlow-relief volcanic crater
TUFFvolcanic rock
WOOLglass or sheep
FIBREof glass or nerve
CRATERlunar or volcanic
MIRAGEnaturally occurring optical phenomenon
PUMICEvolcanic rock
PEEPHOLEglass opening in door
FRAGILITYproperty of glass forming liquids
PETROLEUMnaturally occurring flammable liquid
MIRAGEnaturally occurring optical phenomenon
TYPEnature, category