The clue "Hard mineral" last appeared in the The Telegraph Quick crossword on June 13, 2018. The correct answer for this puzzle is "QUARTZ", a 6-letter word.
Solution QUARTZ is our most searched for solution by our visitors. Solution QUARTZ is 6 letters long. We have 0 further solutions of the same word length.
There are 4 solutions. The longest is DIAMOND with 7 letters, and the shortest is BERYL with 5 letters.
Yes, "HARD MINERAL" is currently trending (last update: 29 Dec 2025). Many solvers seem to find this clue challenging! Other clues with traffic peaks today are: System, Measure, Strategy, Annoyed and Object.
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Solutions are between 5 and 7 letters long.