10. Isola Santo Stefano (Italy, $24 million)

9. Thatch Cay (U.S. Virgin Islands, $24 million plus)

6. Blue Lagoon (Fiji, $25 million)

6. Grand Bogue Caye (Belize, $25 million)

6. Allan Island (Washington State, $25 million)

5. Caritas Island (Fairfield County, Conn. , $25 million plus)

4. Temptation Island (Thailand, $30 million)

2. Cerralvo Island (Mexico, $35 million)

2. Pakatoa Island (New Zealand, $35 million)

1. Isla de sa Ferradura (Spain, $39.7 million)