This is La Viesca Fluorite from Asturias, Spain one of the most sought‑after fluorites in the world. These crystals form sharp, glassy cubes that can be totally transparent or intensely zoned with sky‑blue, lavender, and deep violet bands. Many pieces show purple phantoms wrapped in blue outer zones, creating that iconic color‑shift from sky blue to mauve depending on the light. Crystals often reach 2–3 cm on edge, with beveled edges and a satiny luster that makes them look almost unreal Collect