Luxury Diamond Rings on Gray Fabric Ring Holder

Generate a hyper-realistic image of three diamond rings displayed on a gray fabric-covered ring holder against a dark blue velvet background. The rings feature a pear-shaped diamond, an emerald-cut diamond, and an oval-cut diamond, each set in a silver band with a minimalist design. The diamonds are large and faceted, reflecting light and showcasing their brilliance. The ring holder is made of a textured gray fabric, possibly cotton or linen, and is positioned diagonally across the frame. The dark blue velvet background provides a luxurious and sophisticated contrast to the rings and ring holder. The overall composition is elegant and refined, with a focus on showcasing the beauty of the diamonds and the simplicity of the ring designs. The lighting is soft and even, with subtle shadows adding depth to the image. The image should be highly detailed, with accurate textures and realistic lighting.