Jeffrey M. Bertman
Graduate Gemologist


Moonstone (an alternative birthstone for June) possesses an otherworldly shimmering blue glow that is particularly evocative of its full-faced namesake on a cloudless spring night. This unique gemstone owes its romantic essence to an optical phenomenon known as “adularescence,” which is also commonly referred to as “shiller.” This effect, which is also present in opal, Labradorite, and other stones, is produced by the play of light across the gemstone’s scattered inclusions. The result is a milky, bluish glow that seems to emerge from beneath the moonstone’s surface to create an effect that is similar to the shimmering light that a full moon casts upon water. To wear moonstone to full effect, try pairing it with any black outfit or dress. It is said if you give your lover a moonstone necklace when the moon is full you will always have passion.

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