Create an opulent nail design featuring glimmering diamond accents on an elegant, glossy black base. Consider using varying sizes of rhinestones to form intricate patterns reminiscent of star constellations across each nail. Incorporate a touch of silver foil to enhance the regal appearance, ensuring that the diamonds catch and reflect the light as though they are nestled on a luxurious velvet sky. Ensure the overall look remains sophisticated, yet dramatic, perfect for high-end evening events or celebrations.