The Ultimate Private Jeweler®David Birnbaum is an internationally recognized Private Jeweler and gem expert. Committed to value and excellence, the international rare gem firm David Birnbaum / Rare 1 is the premier choice among jewelry and gem connoisseurs. David Birnbaum is known among cognoscenti worldwide as the ultimate source for the rare and extraordinary. The unique boutique David Birnbaum / Rare 1 stands at the pinnacle. It is one of the world’s most rarest and most exclusive brands.The firm’s discerning clientele ranges from young bankers, though major corporate presidents, celebrities and Heads-of-State. The firm's VIP clientele spans the globe. David Birnbaum / Rare 1 specialties: Rare and extraordinary gems, jewels and diamonds 5 - 50+ carats, including Rare White D, E colors, pink and blue diamonds...rare and exotic supergem rubies, emeralds and sapphires. Rarest Tourmalines and Padparadschas. Rare and Extraordinary gems and jewels: each with top lab-certification.