Moonstone - 1.69 ct - Instituto Gemólogico Español (IGE) - Stone Shows Rainbow Color

Moonstone is a feldspar mineral prized for its adularescence, a glowing optical effect that appears as a soft, billowy light reflecting from beneath the surface, often showing a rainbow sheen. The 1.69-carat moonstone certified by the Instituto Gemológico Español (IGE) exemplifies this captivating phenomenon. Moonstones are typically translucent with a milky or pearly appearance, and their play of color ranges from blue and white to multicolored flashes depending on the angle of viewing. These stones form in igneous and metamorphic rocks, often in regions like Sri Lanka and India. They have been valued historically for their mystical qualities and use in adornment. Moonstones are moderate in hardness (around 6 to 6.5 on the Mohs scale) and require careful handling in jewelry to preserve their distinctive glow and delicate structure.