HomeProduct DescriptionBlue tourmaline and diamond ring, early 20 th century. Tourmaline is capable of producing arguably the widest range of colours in the world of gems, including some extraordinarily vivid and disti Blue tourmaline and diamond ring, early 20 th century. Tourmaline is capable of producing arguably the widest range of colours in the world of gems, including some extraordinarily vivid and disti Showing the single result Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Random £7,500.00 Edwardian, 18ct Gold, Extraordinary Indicolite Tourmaline and Diamond Cluster Ring – Vintage Ring – Antique Ring Boutique Store: - Add to compare