Browse our diverse collection of unique London Topaz rings in your choice of white, yellow, or rose gold. From engagment rings to men's rings, from elaborate works or art, to simple and elegant designs, our 14K gold rings are unmatched in quality, beauty and price. The birthstone of December, the intense deep blue color of a london blue topaz ring can evoke thoughts of warm Caribbean nights. The birthstone of December, the intense deep blue color of a london blue topaz ring can evoke thoughts of warm Caribbean nights.