A high-resolution product photography of a luxury watch named "Luminous Grotto." The watch case is brushed, dark gray titanium with carved, organic, rock-like facets on the sides. The bezel is matte black ceramic with subtle, glowing blue markings. The dial is a deep, rippled teal, resembling cave water, that darkens towards the edges. The hour markers are irregularly shaped, bright, cyan-glowing crystals. The hour and minute hands are broad, faceted brushed steel, filled with a faint blue luminous material. The second hand is a thin, polished orange with a small, glowing tip, like a diver's torch. The watch face is covered by a high-domed sapphire crystal. It is shown in a dimly lit, watery cave setting, with subtle, ethereal cyan and orange light reflecting off the water and rock formations. The atmosphere is mysterious and enchanting, photorealistic. See more