This AAA-grade matrix specimen from San Pedro Mountain, New Mexico captures the essence of a complete andradite garnet vug—yet elevates it with something far more elusive: broad, vivid spectral iridescence across multiple well-formed crystals. Measuring 52mm x 45mm x 18.6mm, this striking piece is composed of an aesthetically balanced cluster of tabular ("tabby") andradite garnets, each one showing off flashes of color ranging from golden fire to peacock blue and violet.

The crystals sit nestled together in classic vug formation, but unlike most pocket material—often dark, impacted, or matte—this piece boasts clean terminations and luminous diffraction on nearly every crystal face. The tight arrangement captures the natural growth pattern of these iridescent garnets while showcasing the lamellar structures responsible for the phenomenon, all preserved in situ with exceptional clarity and orientation.

San Pedro is known as the only active source of rainbow garnet in the U.S., but matrix specimens with this degree of crystallographic integrity and optical performance are extremely rare. This piece isn’t just a representative vug—it’s a best-case scenario of what this unique geological pocket can yield. A museum-worthy example that blends scientific interest, aesthetic balance, and natural spectacle in perfect harmony.