A hexagonal coin, appearing as a solidified chip of dark matter, presents an utterly profound, non-reflective black surface. Its material absorbs all light, creating a void-like appearance that seems to defy conventional physics. The tactile quality is unnervingly smooth and cool, yet it possesses a surprising density. Subtle, non-luminous ripples or faint, ghost-like patterns seem to shift within its depths, hinting at its unearthly composition, and its perfectly precise edges give it a sharp, crystalline structure.