"Once in a blue moon" has come to mean "possibly never" or "dream on." But after the intense volcanic eruption of Krakatoa (Indonesia) in 1883, the clouds of volcanic particulate were so dense and heavy throughout the world that the moon appeared blue for nearly two years.
A generously plump faceted semi-transparent iolite pillow -- with 3 dainty dangles of blue faceted iolite drops -- on a strand of iolite rondelles & moonstone with subtle flashes of aqua blue & gold. Limited edition. See complementary earrings, Blue Moon II (30922A).
