Oval Star Halo RingREQUEST A QUOTE SCHEDULE AN APPOINTMENT Oval Star Halo Pink Sapphire & White Diamond Ring A precious gemstone sits in the center of this dual halo statement ring. The inner halo draws a uniform series of round diamonds while the outer halo bursts with alternating pear to round shaped diamonds forming to an eight pointed star. The piece in the photos is carrying a 2. 53 carat pink sapphire in size 5. 5.