24k gold

The world’s most expensive bottle of water, Acqua Di Cristallo Tributo a Modigliani, priced at $51,500, thanks to its hand-made 24-carat gold bottle. – WTF Fun Facts

Source: https://www.telegraph.co.uk/food-and-drink/news/41335-for-a-bottle-of-water-the-worlds-most-expensive-food-and-d/