Natural Stone 2005, which expanded 150% relative to last year, was substantiated in success in 5 halls with the participation of 372 local and 28 international firms. 23,008 local and 1,617 foreigners visited the fair, which was held by CNR International Trade Fairs, with the support of, IMIB-Istanbul Mineral Exporters Association, Istanbul Marble Association, and Undersecretariat of the Prime Ministry for Foreign Trade.