Crossword Genius

Gemstone (4)

Ross

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">gemstone</span>' is the definition.<br/ ><span class="explanation-format__explanation">(opal is a kind of gemstone)</span><br/ ><br/ >This is all the clue.<br/ ></span>

(Other definitions for opal that I've seen before include "Milky-white mineral" , "Iridescent gemstone" , "it may be highly valued" , "precious jewel" , "Translucent gemstone" .)

I've seen this clue in the Evening Standard, The Independent, The Mirror, The Telegraph, The Guardian, the Penny Press and The Times.
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