Our Round Diamond Studs with Diamond Halo and Hidden Diamonds. Each stud features a brilliant round diamond encircled by a delicate halo of shimmering diamonds, Each stud features a brilliant round diamond encircled by a delicate halo of shimmering diamonds, magnifying their brilliance and allure. Adding an extra touch of luxury, hidden diamonds along the setting elevate these studs to a level of unmatched opulence.