Sangria Summer Red Boulders Southern California quarry. Red Granite Rock The rock material varies from wine red to dark red, many boulders have patches of white quartz. These boulders are blasted angular quarry run boulders. The boulders come in various shapes and sizes ranging from 12" to 60" in length and width, even larger. This rock material is shipped bulk, palleted and specimens on low-beds throughout California and Reno Nevada. Specimen boulders are hand-picked by us from the large masses of 1000's of tons of boulders at the quarry.
