| Answer | Crossword Clue |
|---|---|
| PERLITE | Volcanic glass. |
| PUMICE | Volcanic glass. |
| OBSIDIAN | Volcanic glass |
| PUMICE | Volcanic glass |
| OBSIDIAN | Dark volcanic glass |
| PELESTEARS | Volcanic-glass drops |
| PUMICE | Spongy form of volcanic glass |
| Answer | Crossword Clue |
|---|---|
| PERLITE | Volcanic glass. |
| PUMICE | Volcanic glass. |
| OBSIDIAN | Volcanic glass |
| PUMICE | Volcanic glass |
| OBSIDIAN | Dark volcanic glass |
| PELESTEARS | Volcanic-glass drops |
| PUMICE | Spongy form of volcanic glass |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.