Designer MARINA B Milan, pink Tourmaline, Sapphire cabochon and round brilliant diamonds ring in 18k yellow gold. Diamonds & Gemstones total approx. weight: 4.26 Carats. Top oval pink tourmaline cabochon approx weight 3.50 carats (8 x 4 x 12 mm), Pair of trillion shape cabochon sapphire total approx. weight: 0.50 carat, 2 black onyx carving with 46 round brilliant cut diamonds, total approx. weight 0.50 carat estimate: F-G color, VVS-VS clarity. Inside shank signed MB .750 C2590″. Size 5.50