Sterling silver paraiba tourmaline ring The Paraiba Tourmaline Ring by Cynthia Vincent is a symbol of rare beauty and strength. It is a silver ring with a Paraiba Tourmaline stone. The Paraiba Tourmaline is a rare gemstone found in the Paraiba River in Brazil. The stone is light green with hints of blue and gold. It is a stone of strength and has a long history of being used to calm, soothe, and heal. It is a gemstone of the heart and the mind. The ring has a sterling silver band with three rings for security. The ring can be ordered in sizes 6-10. Green, purple and pink tourmaline rings are also available