| ORPIMENT | Yellow sulphide mineral of arsenic formerly used as a pigment, similar to the red realgar (8) |
| ASBESTOS | Mineral of arsenic - finest and very large (8) |
| ARSENIC | Toxic metalloid element of the nitrogen group occurring in minerals such as orpiment and realgar (7) |
| REDARSENIC | Descriptive name for realgar, an ore of a toxic element |
| CINNABAR | Mineral known as vermilion when used as a pigment; or, the bright red colour of this after which a day-flying moth derives its name (8) |
| SEASHELL | Studied or collected in conchology, a calcareous exoskeleton such as the conch used as a trumpet, cowry formerly used as money, or puka for jewellery (8) |
| LAUDANUM | What opium solution was formerly used as a narcotic painkiller? (8) |
| VENETIAN | - red; ferric oxide (jeweller's rouge) as a pigment; a colour used by Henri Matisse in some of his paintings (8) |
| GAMBOGES | Yellow gum-resins used as a pigment and in medicine (8) |
| MASSICOT | Lead compound used as a pigment |
| ROSAKERS | Obsolete word for realgars, bright-red monoclinic minerals (8) |
| REALGAR | Soft orange-red mineral consisting of arsenic sulphide, formerly used as a rodenticide and in fireworks (7) |
| SPINDLE | The --- tree, Euonymus europaeus, of Europe and W. Asia yields a hard wood formerly used as a component in the textile industry (7) |
| TEREBINTH | A small southern European tree yielding resin formerly used as a source of turpentine |
| LAMPION | Small oil lamp with a coloured glass chimney formerly used as a carriage light. (7) |
| POSSET | What spiced drink of hot milk curdled with beer was formerly used as a remedy for colds? (6) |
| EUSOL | Solution of chlorinated lime and boric acid formerly used as a general antiseptic (5) |
| AZURITE | From a word for "blue", the cerulean-coloured mineral chessylite occurring in malachite, used as a pigment since Roman times (7) |
| CLAY | What natural substance was formerly used as a thickener in liquid polishes? (4) |
| UMBER | A brown, earthy mineral used as a pigment (5) |
