Moonstone:
Moonstone is June's third birthstone, named by Pliny for its moon-phase-like changes.
This belief persisted beyond the 16th century.
Known for adularescence, a floating play of light; some show star or cat's-eye effects.
Sacred in India, displayed on yellow for holiness, believed to hold a good-fortune spirit.
Feldspar family gem in green, blue, peach, champagne colors from igneous/metamorphic rocks.
Prized Sri Lankan sources; also India, Australia, US, Myanmar, Madagascar.