| SCHILLER | Metallic iridescent lustre observed in minerals including moonstone, labradorite and opal (8) |
| FELDSPAR | Constituting around 50 per cent of Earth's crust, any of various rockforming minerals including amazonite, labradorite and moonstone (8) |
| CHATOYANT | From the French for "gleam like a cat's eye", word for a gem, such as the one named after said oculus, with a changeable iridescent lustre (9) |
| LUSTRE | A period of five years; or, brilliance, gloss or sheen, hence something refulgent, such as shiny dress fabric, metallic iridescent glaze, a chandelier or one of its crystal/glass drops (6) |
| IDAHO | Containing within its rocks and stream beds some 72 different minerals including garnet, opal, topaz, rose quartz and amethyst, the US Gem State (5) |
| SHEEN | Soft lustre observed around front of house (5) |
| CANADIAN | Wide area of Precambrian rock rich in minerals also called the Laurentian Plateau (8) |
| AMICABLE | Clever to take in mineral and cordial (8) |
| ADULARIA | A feldspar mineral known as moonstone when displaying an opalescent play of colours (8) |
| SPACIOUS | Large Conservative in mineral spring resort with debts (8) |
| THEORISE | Guess article is encased in mineral (8) |
| STATEGEM | Moonstone, for Florida |
| ERIONITE | Eire into shipping in mineral |
| FELSPAR | Forming some 60 per cent of Earth's crust, a mineral whose gem varieties include amazonite, aventurine, labradorite, moonstone and sunstone (7) |
| ARSENIC | Toxic metalloid element of the nitrogen group occurring in minerals such as orpiment and realgar (7) |
| BLM | Social movement founded in 2013 by Alicia Garza, Patrisse Cullors, and Opal Tometi, for short |
| LITHIUM | Most alkali metals until then were discovered from plant tissue. This element was found in minerals and was named after the Greek for 'stone' (7) |
| PELARGONIUM | Growth of cultivated geranium with heads of pink and opal, planted round lake (11) |
| QUARTZ | Stated amounts of liquid that can be found in minerals (6) |
| SHIELD | Wide area of Precambrian rock rich in minerals also called the Laurentian Plateau (6) |
