Thin walled (~3/16" nominal), parts are made from a high density alpha gypsum matrix reinforced with glassfibers, and cast in custom molds. Parts are light weight (~1.5 pounds/SF) and are made for almost any configuration for interior use. GRG is easily installed and finished with a monolithic look by site trades using regular tools and finishes. Common examples are column covers, capitals, bases, cornices, moldings, pilasters, reflectors, light coves, domes, diffusers, and vaults.