Grows as a compact, multi-ribbed sphere reaching roughly 3 to 5 cm in diameter.
It showcases sharp, geometric ribs where the ink-black skin is broken up by bright red variegation bands or patches. Under high-intensity light or mild cold stress, the dark segments turn an almost pure black while the red sectors take on a glowing, neon quality.
Features short, weak, slightly curved grayish-yellow radial spines that sit closely against the ribs, leaving the dramatic skin colors fully visible.
When mature, it produces silky, elegant funnel-shaped flowers from the apex that typically open in shades of pale pink, light olive, or cream.
