Birthstone of November : Natural Topaz Necklace in Sterling Silver LavaBirthstone of November : Topaz The birth of a gemstone can be traced back to the essence of geological movement, the flow of magma and the beautiful transformation of nature, resulting in the birth of a mineral crystal. The combination of the gemstone and the silver expression of the lava body, following the natural path, signifies the sublimation of the lava collection.