Banded stone (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">banded stone</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for agate that I've seen before include "Banded ornamental stone" , "On the way" , "Ornamental form of quartz" , "Impure form of quartz with banded chalcedony, used as a gemstone" , "Semi-transparent stone" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">banded stone</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for onyx that I've seen before include "Form of chalcedony" , "Form of agate" , "Kind of agate" , "Quartz used as a gem" , "Gemstone, a variety of chalcedony" .)