Accelerated urbanization and development drive an increasing demand for new and special types of concrete. Given that this demand is of interest to various researchers, there has been significant development of special materials that not only meet construction standards but also reduce negative environmental impact, regulate the consumption of natural resources, and enable the use of waste materials from various natural sources. For this reason, the experimental part of the study aims to examine the properties of concrete containing grape and cherry pits. Grape and cherry pits were used as as a partial replacement for commonly used aggregate. For each mixture concrete density, pore content, slump consistency, and flow consistency have been tested in its fresh state as well as density and compressive strength in its hardednen state. The research results showed that using aggregates from natural sources makes it possible to produce concrete with strength that meets structural concrete standards, but due to its lower density (and weight), it can positively affect the seismic resistance of structures. It is believed that this approach contributes to the further development of the construction industry while simultaneously reducing environmental impact.