shock diamonds
... that while normally associated with rockets and jet engines, shock diamonds can also be produced by artillery, volcanoes, and quasars?
... that while normally associated with <a href="./Rocket" id="mwDmU" rel="mw:WikiLink" title="Rocket">rockets</a> and <a href="./Jet_engine" id="mwDmY" rel="mw:WikiLink" title="Jet engine">jet engines</a>, <b id="mwDmc"><a href="./Shock_diamond" id="mwDmg" rel="mw:WikiLink" title="Shock diamond">shock diamonds</a></b> can also be produced by <a href="./Artillery" id="mwDmk" rel="mw:WikiLink" title="Artillery">artillery</a>, <a href="./Volcano" id="mwDmo" rel="mw:WikiLink" title="Volcano">volcanoes</a>, and <a href="./Quasar" id="mwDms" rel="mw:WikiLink" title="Quasar">quasars</a>?