Installers  |  Design Details  |  Distributors Developed in 1988, Amastone modular blocks have become one of the most widely used segmental retaining wall systems in America. Utilizing geosynthetic reinforcement or with grouted cells, Amastone provides an affordable, and beautiful retaining wall system. The popularity of Amastone stems from the many advantages our system offers, such as: Trapezoid shape allows for maximum design flexibility. From 3.5' radius to 90 degree angles, Amastone can accommodate almost every wall design. Not regulated by pins or notches, Amastone can be designed with variable set-backs from 1/2" to 1 1/2". Standard block (4,000 psi. - 66 lbs, plus 48 lbs infilled, 114 lbs total) or Highway/Heavy Weight block (4,500 psi) makes Amastone suitable for any retaining wall application. Available in variety of standard colors, textures and splits. Convenient block size of one square foot Visit Amastone's Photo Gallery.