Spinelli Kilcollin's signature 'Galaxy' rings are so named because they resemble planets aligning when spread out. This 'Cancer Deux' style features four bands hand-cast from 18-karat yellow and rose gold and sterling silver, one of which is illuminated by 0.70-carats of twinkling diamonds. They're held together by tiny annulets, so you can wear them stacked on one finger or across your hand.