From the French for 'a thousand grains', the tiny beads of a milgrain accent can add complexity and detail to a Fire Opal design, as well as create a vintage or antique look. This birthstone of October embodies the orange and red colors of a warming fire. The fiery sparkle of this gem makes a fire opal ring become the center of conversation 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.