Moonstone's characteristic shimmer, or adularescence, reacts beautifully to light, shifting and glowing as the angle of light changes, which is particularly captivating in varying lighting conditions.
Some moonstones may be treated with coatings to enhance their adularescence or color, but high-quality moonstones are typically left untreated.
Moonstone is formed from orthoclase and albite, two minerals from the feldspar group. As these minerals cool, they intermingle and then separate into stacked, alternating layers that cause light to scatter and create the characteristic shimmer.
