Engelsk navneord: opal | |||
| 1. | opal (om masse el. substans) a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones | ||
| Mindre specifikke termer | mineral, opaque gem | ||
| Mere specifikke termer | black opal, fire opal, girasol, harlequin opal | ||