This marquise-shaped, rose-cut rainbow garnet from Nara, Japan is a rare and mesmerizing example of lamellar diffraction at its most ethereal. Weighing 0.89 carats and measuring 8.8mm x 5.7mm x 2.25mm, this gem flashes with a cool-toned purple-blue iridescence, shimmering across the surface like liquid moonlight.

The elongated marquise silhouette draws the eye along the axis of color play, while the rose-cut facets enhance the stone’s surface luster and subtle movement. In the right angle of light, the internal diffraction sheets come alive, revealing spectral color zones that evoke violet flame and glacial ice.

This stone is a gemological whisper from an almost mythical locality—Nara’s iridescent andradite is no longer actively produced, and most of the remaining material lacks the clarity or color intensity seen here. A collector’s treasure and a one-of-a-kind centerpiece for high-concept jewelry.