6. Iris Fontbona ($10.1 billion)
Iris Fontbona is the owner of Antofagasta Plc. It is the big mining and beverages company in Chile.
Her late husband, Andronico Luksic, built the fortune from scratch. When he passed away in 2005, she took over the business alongside their three sons. Unfortunately, one of them passed away in 2013.
The 73-years-old widow is a generous lady. In 2015, she donated $4.3 million to the annual Chilean Telethon. That is a world record.
She is now living in Santiago, Chile. She owns a total of $10.1 billion net worth. This put her as the 101th billionaire in the world and the richest in Chile.