This radiant-cut rainbow garnet from Nara, Japan displays brilliant green lamellar diffraction across its primary face—an uncommon and highly coveted color in this rare material. The top of the stone features a precise radiant faceting pattern that captures and channels light into the central iridescent plane, while the sides are adorned with rose-cut facets that echo the natural geometry of the crystal and provide subtle reflections from every angle. The combination of sharp structure and vivid optical phenomena gives this piece a dynamic, almost architectural quality. A gem like this is exceptionally rare from Nara, making it a high-tier collector’s stone or a showstopping focal point for custom jewelry grounded in elegance and rarity.