The clue "Crystalline rocks" last appeared in the The Washington Post crossword on November 5, 2017. The correct answer for this puzzle is "GEODES", a 6-letter word.
Solution GEODES is 6 letters long. So far we haven´t got a solution of the same word length.
There is 1 solutions. The longest is GEODES with 6 letters, and the shortest is GEODES with 6 letters.
No, "CRYSTALLINE ROCKS" hasn´t seen a spike right now. Solvers are most interested in: mess, Dam, Faster, Passion and Dormant.
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The solution is 6 letters long.