This is Emperor Nero's 2,000-year-old bathtub. It's made of porphyry, an extremely rare Egyptian marble that if you were to acquire that much of it today, it would cost around $1 billion. 
This is Emperor Nero's 2,000-year-old bathtub. It's made of porphyry, an extremely rare Egyptian marble that if you were to acquire that much of it today, it would cost around $1 billion.
