| Answer | Crossword Clue |
|---|---|
| ONYX | Stone used for chess sets |
| ONYX | Material used in many high-end chess sets |
| ONYX | Stone used for cameos |
| ONYX | Stone used for jewelry |
| EMERY | Hard stone used for grinding. |
| RIPRAP | Loose stone used for foundations |
| FLINT | Hard stone used for striking fire |
| TESSERA | Small square of glass or stone used for mosaics |
