Exports of polished diamonds dropped 23.3% to $520 million in March 2007 from last year's levels when diamond polishers exported $678m. worth of the precious stones to dealers around the world. Additionally, over the first three months of this year, exports of polished diamonds from Israel were down 2.1% from the same period last year. Imports of polished diamonds, on the other hand, rose more than $100m. in March from 2006. Approximately 56% of Israel's diamond exports are shipped to the United States.