This exquisite 10.03 carat shield-shaped cabochon is a top-grade example of Rainbow Lattice Sunstone—a truly rare and mesmerizing gemstone found exclusively at the famed Rainbow Mine in the Harts Range of Northern Territory, Australia. Measuring 15mm x 13mm x 6mm, this perfectly proportioned gem displays the finest quality of this phenomenon-rich material, characterized by vivid lattice-pattern inclusions and vibrant internal iridescence.

What sets this piece apart is the exceptional clarity of the feldspar host and the razor-sharp, geometrically oriented inclusions of magnetite and hematite. These naturally occurring inclusions form a unique "lattice" structure—intersecting at precise angles—that interacts with light in a spectacular way. As illumination passes across the surface, the magnetite reflects bright iridescent flashes of electric green, violet, and gold, while the hematite contributes both to the contrast and occasional aventurescent sparkle.

This rare combination of twinning, orientation, and mineral inclusion is not only visually breathtaking but is also a perfect example of nature’s crystalline precision. The shield shape enhances the optical symmetry, emphasizing the lattice effect at multiple viewing angles. A collector’s gem and a lapidary marvel, this AAA-grade Rainbow Lattice Sunstone is museum-worthy and would be the centerpiece of any bespoke jewelry design or elite gemstone collection.