| Part of speech | unknown part of speech |
|---|
| Nominative | kvarco |
|---|---|
| Accusative | kvarcon |
| Czech | křemen |
|---|---|
| Danish | kvars |
| Dutch | kwarts |
| English | quartz |
| French | quartz |
| German | Quarz |
| Hungarian | kvarc |
| Icelandic | kvars |
| Italian | quarzo |
| Portuguese | quartzo |
| Saterland Frisian | Quarz |
| Spanish | cuarzo |
| Turkish | kuvarts |
| Welsh | cwarts; creigrisial |