This vividly iridescent Rainbow Garnet cluster is a spectacular example of lamellar diffraction showcased in matrix. Though miniature in size, the aesthetic presence of this piece is striking—multiple intergrown andradite crystals form a tight, sculptural cluster that exhibits exceptional surface color play.

The garnets display bright flashes of spectral color across most visible faces, with purples, greens, and golden tones shimmering in a tightly layered mosaic. The iridescence is accentuated by the high-quality surface polish of the naturally formed faces, which intersect in a way that gives the piece remarkable depth and movement as it's turned under light.

Rainbow Garnets from San Pedro Mountain are prized for their rare optical effects, and complete, matrix-bound clusters like this are exceedingly hard to find—especially with such vibrant diffraction and clean, uninterrupted faces. A standout example for any thumbnail collector or connoisseur of rare U.S. mineral localities.