Emperor Nero’s 2,000-year-old bathtub was carved from one of the rarest stones on Earth and is estimated to be worth around $1 billion today. Before modern lux

Emperor Nero’s 2,000-year-old bathtub was carved from one of the rarest stones on Earth and is estimated to be worth around $1 billion today. Before modern luxury, this monumental bathtub represented the height of imperial prestige. Traditionally linked to Emperor Nero, it was carved from a single …