David Birnbaum, Ultimate Private Jeweler eCatalog.
David Birnbaum rare jewels and gems. Aside from offering the rarest diamonds in the world, the Birnbaum firm maintains specialties in the very rarest rubies, emeralds and sapphires. Natural Rare Unheated Rare Burma and Mozambique Vivid Red pigeons blood Rubies, Gem Colombian Emeralds, Rare Burma and Ceylon Natural Unheated sapphires are in the mix at David Birnbaum Rare 1. See also David Birnbaum rare padparadscha, paraiba, spinel.