Make a trendy statement with these 9ct yellow gold filled crystal thread drop earrings Stardust refers to synthetic glitter material, which is adhered to the surface of the jewellery to create a unique shimmering finish. To prevent any damage to your piece of jewellery, it is important to take care of it by removing it prior to washing, bathing, doing dishes, household chores, strenuous activities, exercise, sports and swimming.