This exceptional fluorite cluster from the renowned Erongo Mountains of Namibia is a vivid display of crystallographic beauty and geological nuance. Measuring 39.75mm x 40mm x 30mm, the piece is composed of deep green, gemmy fluorite crystals, with prominent spinel twinning that gives the cluster a dynamic, almost sculptural geometry. The surfaces show light hydrothermal etching, adding a subtle texture that accentuates the twin planes and natural transparency of the crystals.

The Erongo region is famed for its diversity of pegmatite-hosted mineral specimens and is especially known for fluorite that can rival the best in the world in both color and crystal form. What makes this piece particularly rare and desirable is the presence of spinel-law twinning, a symmetrical intergrowth pattern where crystals appear rotated on a shared axis—creating complex, often flattened or stellate forms that reflect light in captivating ways.

The green color of this fluorite is rich and saturated, glowing when backlit and exhibiting excellent internal clarity, especially in the main crystal faces. The hydrothermal etching adds an organic softness to the geometry, subtly revealing the internal zoning and growth history without diminishing the sharpness of the twin structures.

A collector-grade specimen that balances form, color, and crystallographic rarity, this is a standout piece from one of Africa’s most celebrated mineral localities—a perfect combination of classic aesthetics and scientific intrigue.