| TOPAZ | A white or colourless mineral used as a gemstone (5) |
| QUARTZ | Colourless mineral used to make glass (6) |
| SILICA | A hard white or colourless mineral substance occurring as quartz etc. used for making glass, ceramics, etc. |
| LAPIS | --- lazuli, a brilliant blue mineral, used as a gemstone (5) |
| BERYL | Transparent mineral used as a gemstone (5) |
| UMBER | A brown, earthy mineral used as a pigment (5) |
| BORAX | Mineral used as a metallurgical flux |
| EGRET | A wading bird usually with a white or buff plumage (5) |
| WHITE | Word used to denote light that contains all wavelengths of the visible spectrum, hence all colours of the rainbow, yet is perceived as achromatic or colourless (5) |
| ICHOR | Recess's contents: yellow or colourless fluid (5) |
| EMERY | A hard, greyish-black mineral, used as an abrasive and polishing agent (5) |
| EXERT | Hard greyish-black mineral used as an abrasive and polishing agent (5) |
| LAPISLAZULI | A brilliant blue variety of a rare mineral, used as a gemstone (5,6) |
| GARNET | A hard, glassy, red, yellow or green mineral, used as a gemstone (6) |
| MICAS | Minerals used as insulating material |
| ZIRCON | Mineral used as a gemstone (6) |
| OPAL | Mineral used as a gemstone, of hydrated silica (4) |
| CHRYSOBERYL | Rare greenish-yellow mineral used as a gemstone (11) |
| TURQUOISE | Greenish-blue mineral used as a gemstone (9) |
| BLEACH | Agent that makes things white or colourless (6) |
