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The first hint to crack the puzzle "Crystal mineral, 2nd most popular on earth" is:

It is a word which contains 6 letters

      

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The second hint to crack the puzzle "Crystal mineral, 2nd most popular on earth" is:

It starts with letter q

q      

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The third hint to crack the puzzle "Crystal mineral, 2nd most popular on earth" is:

It ends with letter z

q      z

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Looking for extra hints for the puzzle "Crystal mineral, 2nd most popular on earth"
q      z
Click on any empty tile to reveal a letter

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The answer for the puzzle "Crystal mineral, 2nd most popular on earth" is:
q u a r t z

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