The Bahia Emerald is one of the largest emeralds (or more appropriately, emerald crystals embedded in a host rock) and contains the largest single shard ever found. The approximately 840 lb (1,900,000 carats) Brazilian stone narrowly escaped flooding during Hurricane Katrina in 2005 during a period of storage in a warehouse in New Orleans. This short video retells some of the lore of its discovery.