Futuristic Glass Holographic 3D Letterform

An abstract futuristic 3D graphic visualization of the letter 'X' sculpted from thick optical frosted glass with prismatic caustic reflections, floating weightlessly in a dark void filled with subtle glowing laser grid lines and soft ambient light dust, featuring interior iridescent holographic foil layers that shimmer with rainbow spectral colors as light passes through the refractive glass edges, lit by dual studio spotlights in icy blue and magenta producing stunning light dispersion, internal refractions, and glowing rainbow caustic patterns across the dark surrounding surface, eye-level centered macro shot emphasizing optical precision, shot on a 90mm f/2.8 macro lens with crystal-clear focus, rendered using Redshift/Octane 3D style, sleek futuristic sci-fi aesthetic, pristine and mesmerizing digital visual mood.