This superb miniature-sized matrix specimen from San Pedro Mountain features sharply crystallized iridescent andradite garnets with exceptional form and color. The trapezohedral faces exhibit a glowing green sheen, while auxiliary faces flash with vibrant blue lamellar diffraction, creating a striking contrast of spectral hues across the crystal surfaces. The crystals are exceptionally sharp and complete, with no visible damage or significant contacts—rare for matrix specimens of this type.

The aesthetics of the piece are elevated by the well-balanced composition: the crystals are elegantly perched on their matrix in a way that displays beautifully from multiple angles. San Pedro Mountain is one of the world’s few localities known for producing naturally iridescent andradite garnets, and matrix pieces of this quality—with both pristine terminations and vivid diffraction—are increasingly scarce.

A standout example of both the locality and species, this is a fine addition to any collection of optical phenomenon minerals or North American classics, offering rarity, beauty, and impeccable crystallography in a highly displayable form.