World’s richest teenager Athina Roussel. (AFP)

Rio de Janeiro, Oct. 21 (Reuters): The gift that the heiress of Greek shipping magnate Aristotle Onassis chose for her Brazilian boyfriend may not match in elegance the flawless gems her grandfather poured on Jacqueline Kennedy.

But the price is quite high, for a cow.

The world’s richest teenager, Athina Roussel, 18, paid $320,000 for a prize cow called Esperanca (Hope) at a cattle auction in Sao Paulo last night as a gift for her boyfriend — Olympic horseman Alvaro Affonso de Miranda Neto, known as Doda, auction organisers said today. Doda, 30, who was also at the auction, has a cattle farm.

Local media said it was Roussel’s first major deal in Brazil although she had visited the country several times earlier to see Doda. Tabloid newspapers say she also underwent liposuction in Brazil, famous for the cult of body-beautiful, earlier this year.

On her 18th birthday, Roussel inherited an estimated $2.7 billion worth of cash, property, jewels, and other assets from the Onassis estate, to become the world’s richest teenager.

By comparison, a 40-carat diamond ring that was Jacqueline Kennedy Onassis’ engagement gift from Aristotle Onassis and valued at up to $600,000, sold for a whopping $2.6 million at an auction of the former US First Lady’s belongings in 1996.