moonstone

n semi-precious stone with a pearly appearance used in making jewellery 月长石.

monument, monumental, monumental mason, monumentally, moo, moo-cow, mooch, mood, moodily, moodiness, moody, moon, moon-face, moon-shot, moonbeam, moonless, moonlight, moonlighting, moonlit, moonshine, moonstruck, moony, moor, moorhen, mooring, Moorish, moorland, moose, moot, mootpoint, mop, mope, moped, moquette, moraine, moral, moral certainty, moral support, moral victory, morale,