Rare Natural Paraiba Ring, Double Trillion Cut Cyan Blue Tourmaline Ring with 1.38ct Real Diamonds, 18K solid White Gold, incl Certificate This 18k solid white gold ring is set with 2 marvelous Cyan Blue Tourmaline also called Paraiba with excellent fire and brilliance. The color of the Paraiba is a mysterious green-blue which is ultra rare and highly valued. The ring is micro paved with a total over 1.383ct natural diamonds. This Ring is a wonderful piece of craftsmanship and one of a kind. The Paraiba Ring, Paraiba Tourmaline Ring, Halo Engagement Ring Sets, Blood Diamond, Moissanite Necklace, Cyan Blue, Blue Tourmaline, Tourmaline Ring, Moissanite Wedding Bands