This 5.2 carat precision-faceted rainbow garnet from San Pedro Mountain, New Mexico is a refined expression of one of Earth’s rarest optical phenomena. Expertly cut to highlight its natural geometry, the stone features two dominant, highly active iridescent faces that display intense spectral diffraction—vivid flashes of green, gold, blue, violet, and red ripple across the surface with dynamic movement and exceptional brightness.

The garnet itself is remarkably gemmy, with a high degree of transparency and internal clarity rarely seen in this material. Its thin, elongated form and mirror-like polish make it ideal for a pendant setting, where the iridescent planes can be perfectly oriented to face forward and capture maximum light, optimizing their visual impact.

San Pedro Mountain is the only known U.S. locality producing rainbow garnets with this level of diffraction, and faceted examples—especially with this quality of material and cutting—are exceedingly rare. This piece bridges the boundary between mineral specimen and fine gemstone: a wearable fragment of Earth’s hidden spectrum, precision-shaped and ready to shine.