This 6.15 carat rainbow garnet from Arlit, Niger, is a striking example of natural crystal geometry enhanced through subtle, selective polishing. Measuring 10.5mm x 9mm x 6.9mm, this specimen maintains its original dodecahedral form, complete with a cluster of smaller garnet crystals cascading off one side of the primary face—adding dimensionality and a sense of crystallographic movement.

Each crystal face has been lightly polished, just enough to activate the vibrant lamellar diffraction phenomenon this locality is revered for. The result is a metallic, spectral iridescence that shifts in bands of gold, violet, electric blue, and neon green—depending on the angle of light. The polish emphasizes the internal nanostructures without compromising the natural integrity of the crystal, offering the perfect balance between untouched form and optical performance.

The Arlit locality is known for producing the finest rainbow andradite garnets on Earth—defined by their saturation, brightness, and clean diffraction. This piece exemplifies that pedigree, presenting as a hybrid between a collector-grade crystal and a display-ready gemstone. A phenomenal addition for collectors of optical phenomena, rare garnets, or natural sculpture.