3. The Millennium Sapphire – est $180 million

As the largest sapphire on record you would expect the Millennium Sapphire to impress with its glitter and shine. But in fact, the stone drops jaws for another reason: its design. Uncovered in Madagascar in 1995 it was certified in Bangkok before winning a Guinness World Record in 2001 as the largest carved sapphire. Carved you say? Yes, the owners of the Millennium Sapphire didn’t want to break the stone into pieces. Instead, they had artist Alessio Boschi design a carving for the stone that celebrated human ingenuity throughout time.
2. Bahia Emerald – est $400 million




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