Berkshire Hathaway Inc, says the cheif executive of its Helzberg Diamonds unit has resigned , but Warren Buffet's company didnot say why .
Berkshire said in a statement that Marvin Beasley decided to resign effective Monday .
He will be succeeded by Berly Raff , who had been managing JC Penney Co , Inc's Jewerly divison . Berkshire Cheif Executive and Chairman Buffet said in the statement that Raff will bring merchandising instint and analytical sharpness to the job.
wire reports
