This name captures the radiant and celestial nature of the galaxy motif in the necklace. "Luminous" signifies the dazzling and radiant quality of stars and galaxies, reflecting their luminosity and brilliance. "Cosmos" represents the vast and mysterious expanse of the universe, symbolizing the cosmic beauty encapsulated in the necklace. "Luminous Cosmos" combines these elements, representing the necklace as a captivating embodiment of the cosmic splendor and celestial allure, offering a mesmerizing and radiant accessory that brings the wonders of the universe close to the wearer.