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? = wild character
* = wild group


1. opal  (noun) 
a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones

  More Specific:
black opal - a dark colored opal with internal reflections of green or red
fire opal / girasol - an opal with flaming orange and yellow and red colors
harlequin opal - a reddish opal with small patches of brilliant color

  More Generic:
    mineral     opaque gem


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