Playing marble (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">playing marble</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for agate that I've seen before include "Hard stone with concentric bands of colour" , "Quartz variety" , "Ornamental form of quartz" , "Quartz with bands of colour, used in jewellery" , "rock with bands" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">playing marble</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>