Ronde Island, Grenada

Ronde Island is valued approximately at $100 million making it the most expensive island in the world in the Grenadines. Spread across 2000 acres, this massive island is not just private it also offers stunning landscapes and an exciting natural feature that very few private islands have on offer. A swim-through cave leads you to an impressive cavern underground resplendent in stalactites and quartz crystals. It is truly a hidden treasure in the Grenadines.