This study investigates the use of sandstone dust (SSD) to enhance earthen embankment stability through various blend ratios. The utilization of sandstone dust offers a sustainable remedy, effectively tackling the waste disposal issue associated with this industrial byproduct and diminishing the environmental repercussions of conventional disposal techniques such as landfilling. This study focuses on different blend ratios (0%, 20%, 40%, 60%, 80%, 100%) with an objective to increase the friction angle, necessary for constructing embankments at steeper angles, mostly in regions like Rajasthan where the friction angle is typically 29°. The study finds significant improvements across several parameters such as increase in dry density and specific gravity as the blend percentage of sandstone dust increases. The friction angle increases to 40° for the 100% blend mix, that shows a substantial improvement over the locally available soil. Additionally, slope stability analysis was conducted using Geo-Slope software to find out optimum blend combination. It is concluded that the 40% blend ratio can be seen as the optimum choice, with a factor of safety of 1.32. This blend exceeds the minimum safety requirement outlined in Indian standard for stable seepage circumstances under full reservoir conditions, which is established at 1.3. These outcomes underscore the dual benefits of using SSD: enhancing embankment stability and offering a sustainable solution to the disposal of industrial byproducts, thereby contributing to more environmentally friendly construction practices.