Steampunk alchemy letter C and D

A high-quality 3D digital render showcasing two ornate, fantastical letters, 'C' and 'D', set against a pristine white background. The letter is constructed from weathered stone and intricate gold filigree, pulsating with vibrant blue neon energy along its curves. It features small mechanical gears, moss-covered segments, and a tiny glowing potion vial . The letter acts as a contrast, built with heavy, etched stone panels,, and a vertical spine adorned with brilliant glowing purple crystals . Intricate clockwork mechanisms are visible on the inner curve of the 'D'. Flying insects,,, surround the letters, adding a sense of magical vitality. The lighting is bright and clean, emphasizing the contrast between the cool blue energy and the warm gold of the machinery, creating an atmosphere of arcane engineering and magical fantasy.