Moonstone Palm Stone

A polished rainbow moonstone palm stone — smooth, white to near-translucent, with the floating blue sheen called adularescence that appears to move within the stone as you tilt it. Moonstone is a feldspar mineral (orthoclase or oligoclase) with alternating thin layers of different compositions; light scatters between these layers to produce the optical phenomenon.

Rainbow moonstone shows additional spectral colours beyond the blue base — flashes of orange, yellow, or violet in the right light conditions. The intensity of the optical effect depends on the thickness and regularity of the internal layers; high-quality specimens show a full blue flash across most of the face.

The association with the moon is not arbitrary — the adularescence genuinely resembles light reflecting off water at night, with the same fluid, shifting quality. It was the gemstone of the Roman goddess Luna, worshipped at full moon.