Diamond Ring - R4925Deep blue at the centre, brilliant white all around. The R4925 is built around a natural blue sapphire of 2. 00 ct vivid, and full of depth encircled by a double halo that elevates it to something truly spectacular. The inner halo features marquise style diamonds arranged in a starburst pattern around the sapphire, their elongated points giving the centre an almost crown like frame. The outer halo is set with round brilliant diamonds, adding a second