Yogo sapphires
... that Yogo sapphires are rarer than diamonds and are found only in Yogo Gulch, Montana?
... that <b id="mwA3M"><a href="./Yogo_sapphire" id="mwA3Q" rel="mw:WikiLink" title="Yogo sapphire">Yogo sapphires</a></b> <i id="mwA3U">(pictured)</i> are rarer than diamonds and are found only in Yogo Gulch, <a href="./Montana" id="mwA3Y" rel="mw:WikiLink" title="Montana">Montana</a>?