| Clue | Source | Date |
|---|---|---|
| Cubic ___ (faux diamond) | ||
| Cubic — (fake gem) | Premier Sunday | 27 Nov 2022 |
| Cubic __ (faux diamond) | Newsday | 20 Mar 2022 |
| Metal oxide in dental crowns | New York Times | 03 Jul 2021 |
| Cubic ___ (synthetic gemstone) | New York Times | 12 Jan 2019 |
| Cubic ___ (synthetic gemstone) | ||
| Cubic ___ (synthetic gemstone) | ||
| One Nazir company manufactured white pigment | ||
| Cubic stone? | ||
| Cubic ___ (gem) | ||
| Compound used in abrasives |