The document presents an experimental investigation on the feasibility of using unprocessed stone dust as a fine aggregate in concrete, highlighting its potential as a substitute for increasingly scarce river sand. Results indicate that the compressive strength of concrete using stone dust is significantly higher than that of conventional concrete, with improvements of up to 35% for M15 and 4% for M20 grades. The study concludes that unprocessed stone dust can effectively replace river sand in concrete production, providing both environmental and economic benefits.