GROK Quartz Icosahedron Core Render

Glacier-cyan quartz icosahedron (geodesic facets; IOR≈1.5; micro-roughness≈0.02) suspended over black. Through its center runs a glowing volumetric core where the word "GROK" appears as crisp die-cut negative space (stencil cavities) with bright rim-light - letters read by absence, not neon tubes. Subtle internal fog reveals depth; no heavy bloom. Negative prompt: extra letters, distorted/warped glyphs, serif forms, rainbow streaks, chromatic aberration, dirty lens, flat studio look Materials: - Shell finish: clear quartz with faint micro-scuffs (premium realism), dispersion OFF - Core: volumetric glow with soft density falloff Lighting: - Setup: feathered top key, small side kicker to articulate facets, gentle back halo; add 1–2% log-luma dither Composition: - Angle: three-quarter - Lens: 55mm - Framing: shell diameter ≈ 0.7× frame; crisp infinite focus Color management: - Core hues: #00E0FF, #FF3BC8, #FFA000 - Background: #000000 Text legibility: - Case: UPPERCASE 'GROK' - Counter thickness: void stroke ≈ 8% of letter height - Kerning: even; word width ≈ 60% of inner span