Capture a haunting portrait of a face without a mouth, set against a dark, gradient-less background that seems to erase all identity, shot on the Canon EOS 5D Mark IV paired with the EF 50mm f/1.2L USM lens. Use a modern art style, with only two glowing colors: a rare, iridescent purple (such as amethyst) and a bright, metallic silver (such as aluminum). The purple should glow with a soft, shimmering light, while the silver should reflect with a sharp, mirror-like intensity, conveying a sense of mystery and intrigue.