Ophelia - Prong Set Halo Engagement Ring - Setting onlyOphelia Ring Mounting Prong Set Engagement Ring with a Halo of diamonds, moissanites or white sapphires Setting only Looks best worn stacked with custom made curved wedding bands (sold separately). If stacked with straight bands there will be gaps between the 2 rings. Mounting Specifications: 4 prong center setting with round prong tips Height above finger ~6mm for 7mm round gemstone, more or less for other shapes and sizes Ring shank about 1. 5mm, 1.