GLASSY VOLCANIC ROCK Crossword Clue

The most common solution for the crossword clue "GLASSY VOLCANIC ROCK" are OBSIDIAN with 8 letters.
We know 2 solutions for: GLASSY VOLCANIC ROCK
Crossword Puzzle Infos
Glassy volcanic rock is a type of igneous rock that forms when molten lava cools quickly. Obsidian, which has 8 letters, is a type of glassy volcanic rock that is usually black or dark in color and has a smooth, glass-like texture. Pitchstone, which has 10 letters, is another type of glassy volcanic rock that is usually gray or brown in color and has a rough, jagged texture.
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