Well Chile is not really a tropical country, far from it really, but we have some beaches with white sand turquoise water, mainly in northern Chile, that look really similar to those you can find in the Caribbean. Here are some of them.
Bahía Inglesa, III Region.
La Virgen Beach, III Region
Blanca Beach, IV Region.
Damas Island, IV Region.
El Tebo Beach, V Region.
Las Cujas Beach, V Region.
Anakena Beach, Easter Island