From the French for 'a thousand grains', the tiny beads of a milgrain accent can add complexity and detail to a Pink Tourmaline design, as well as create a vintage or antique look. Pink tourmaline is a birthstone of October, along with opal, and is a truly special gem. The deep rosy color of a pink tourmaline ring will be sure to attract attention. The birthstone of December, the intense deep blue color of a london blue topaz ring can evoke thoughts of warm Caribbean nights.