3-10cm Gymnocalycium prochazkianum

Gymnocalycium prochazkianum is a distinctive and collectible cactus known for its unique metallic-gray to lead-blue stem coloration and elegant simplicity. Native to Argentina, this small, globular species typically grows as a solitary plant, though mature specimens may occasionally produce offsets. Its most striking feature is the smooth, lead-gray to bluish-green epidermis that gives it a distinctive metallic appearance, reminiscent of weathered metal—hence its common name, "Lead Skin Cactus."