Jewellery › Halo Stud Diamond Earrings Image 1 of 3 Image 2 of 3 Image 3 of 3 Halo Stud Diamond Earrings £3,500.00 The main central diamond is 0.25ct and is surrounded by smaller diamonds. All stones used by Sara are of a high quality. Quantity: Add To Cart Added! The main central diamond is 0.25ct and is surrounded by smaller diamonds. All stones used by Sara are of a high quality.