Core Points - The article discusses the ten most expensive items in the world, highlighting their extraordinary prices and unique characteristics [1] Group 1: Expensive Items - The tenth item is the feather of the endangered Huia bird, valued at $10,000, which translates to approximately 68,000 RMB [3] - The ninth item is a bottle of water designed by artist Fernando, priced at $60,000, made from Fiji's purest water and containing gold dust [6][10] - The eighth item is a luxury mobile phone priced at $2.89 million, crafted with 439 rubies, 2 emeralds, and 1 diamond, emphasizing its exclusivity [13][15] - The seventh item is the Han Emperor Moutai liquor, with a record price of $8.9 million for a rare bottle from 1992 [19][21] - The sixth item is golden caviar, selling for $10,000 per spoon, made from the eggs of the endangered Beluga sturgeon mixed with gold dust [22][24] - The fifth item is a Patek Philippe watch, which sold for $21.79 million at auction, known for its craftsmanship and exclusivity [27][29] - The fourth item is Antilia, a private residence in Mumbai, valued at $1 billion, known for its luxury and size [32][34] - The third item is the golden mask of Tutankhamun, estimated at $10 billion, recognized as a significant archaeological artifact [36][38] - The second item is Californium-252, priced at $27 million per gram, used in cancer treatment but extremely rare [40][42] - The most expensive item is antimatter, costing over $60 trillion per gram, with potential applications in energy generation [45][46]