Quartz (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">quartz</span>' is the definition.<br/ ><span class="explanation-format__explanation">(type of quartz)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for jasper that I've seen before include "Gemstone" , "Reddish-brown stone used in jewellery" , "Semi-precious form of quartz" , "Opaque quartz" , "hard matter" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">quartz</span>' is the definition.<br/ ><span class="explanation-format__explanation">(smoky quartz is a kind of quartz)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for smoky that I've seen before include "Reeky" , "Filled with tobacco fumes" .)