Forbes Magazine released its annual list of the world’s billionaires over the weekend, revealing the financial standing of some of the world’s top diamantaires, Art of Jewellery reported.



Nicky Oppenheimer and his family took the top spot among them and ranked #154 on the overall Forbes list, followed by Laurence Graff at #374, Beny Steinmetz at #488 and Lev Leviev at #655.



Oppenheimer, who ranked #98 on last year’s list, has a net worth of $5 billion. His fortune, which is largely based on his family’s longtime holding in diamond giant De Beers, remained intact during a tough year the company experienced.



Despite posting a net loss of $220 million in 2009, cutting costs has allowed De Beers to remain cash positive.



Graff, who slipped from the 305th spot on the 2009 list, saw his wealth increase from $2.2 billion to $2.5 billion last year, thanks, to renewed demand for high-end diamonds.

Steinmetz too slipped from the 334th spot he occupied last year, with his net worth remaining steady at of $2 billion.

Meanwhile, Lev Leviev has maintained his 1.5 billion net worth since 2009, when he was #468 on the Forbes list. Both this year and last, Forbes notes that the “world's largest cutter and polisher of diamonds is trying to hold his empire together.”