3 Carat Oval Pink Sapphire Diamond Ring in Platinum.  This modern cocktail ring features a 3.22 carat oval cut pink sapphire with .30 carats of diamond accents and is set in platinum. The stunning pink sapphire is seated inside a milgrained bezel and surrounded by a diamond halo. The shoulders of the ring are also adorned with accent diamonds in a line with milgrain detail. If you love pink, this is the ring for you!