Friendship, love and loyalty are represented by this historic celtic design. A Pink Tourmaline claddagh ring with your birthstone or favorite color makes it even more significant. 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. Brown gemstones are gaining in popularity and smoky quartz is an affordable choice. A smoky quartz ring goes well with autumn colors and evening wear.