Despite jumping to first place in the ranking for Russia, Kerimov currently occupies the 46th spot on the global list, which is updated in real time, with a $24.7 billion net worth as of 10:00 GMT.
According to the magazine, due to an increase in gold prices, Kerimov's family has for the first time become the richest entrepreneurs in Russia. The family's fortune has grown by $1.7 billion since the beginning of Wednesday.
Kerimov is followed by the list's former leader, Vladimir Potanin, one of the co-owners of the metals and mining company, Nornickel, with Forbes estimating his fortune at $24.6 million.
Earlier this week, the gold price topped $2,000 per ounce for the first time ever. As of 15:01 GMT on Tuesday, October gold futures on COMEX were trading up 1.2 percent at $1,998.25 per ounce. Minutes earlier, the price peaked at $2,000.25.