ABSTRACT: Sana’a city has been growing fast vertically and horizontally to provide housing, business and other facilitiesto the ever in. This work was undertaken to determine the quality of basalt coarse aggregate in Hamdan area, NWSana’a. It included field work which consisted of collection of basalt aggregate samples and hand specimens. Thestudy covered coarse aggregates from one of the main crushers in the vicinity of Sana’a city, about 12 km NW ofSana`a, Yemen. The objective of this study is to determine the physical and mechanical properties of basalt coarseaggregates and comparison of the results with the standards. Chemical composition of basalt was determined by theX-ray fluorescence (XRF). The thin sections show that the studied basalt is mainly composed of calcic plagioclaseand augite with few olivine. The types of testing required are gradation, specific gravity, water absorption, flakinessand elongation, Los Angeles abrasion value, aggregate impact value, soundness and alkali-silica reactivity. Theresults showed that, the basalt coarse aggregates in Hamdan area comply with the international standards.