Crossword clue: any of a group of hard glassy minerals (silicates of various metals) used as gemstones and as an abrasive

The most common answer is garnet (6 letters).

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

garnet 6 letters wn-def

any of a group of hard glassy minerals (silicates of various metals) used as gemstones and as an abrasive