C3A1B3O1C3H4O1N1
17 points
CABOCHON is validvalid
a precious stone [n CABOCHONS]
(French) a precious stone polished but uncut, or cut rounded on the top but flat on the back [n -S]
a precious stone [n CABOCHONS]
(French) a precious stone polished but uncut, or cut rounded on the top but flat on the back [n -S]