A captivating 3D render of a unique hourglass-shaped jar, filled with numerous miniature universes. Each mini universe is a colorful and vibrant world, with diverse landscapes, celestial bodies, and other cosmic elements. The transparent glass allows the viewer to marvel at the intricate details of these microcosms. The hourglass shape is adorned with intricate patterns and internal lighting, casting a mesmerizing glow over the aquarium. The background features a deep black tone, representing the vastness of the universe, with a serene starscape painting in the distance. The overall atmosphere of the image is a blend of dark fantasy and vivid cosmic wonder, with a touch of architectural and conceptual art elements., 3d render, architecture, conceptual art, dark fantasy, product, photo