Industry sources claim that over the month of March wholesale diamond prices rose sharply. FYI, diamond prices peaked in August 2008, and then fell quickly along with the decline in housing and financial markets late that year. Prices reached a low during early 2009, and stayed low for most of that year. Near late 2009, early 2010 wholesale diamond prices started to move up, and that trend has continued.
That rise in wholesale price is now just beginning to be felt at the retail store level, so be prepared to experience sticker shock if you shopped diamonds last year but did not purchase, as the price you may have been quoted then is now likely gone only to be replaced with higher numbers.