quartz / sandstone- oklahoma (crazy Horse) Oklahoma flagstone has natural earth tone colors ranging from buff to dark brown. A very popular choice with architects for driveway and walkway applications complementing "Carmel Stone." This stone is also available in random squares and rectangles as well as stair treads. Oklahoma flagstone is packaged in pallets and sold by the ton. AVAILABLE SIZES DESCRIPTION THICKNESS COVERAGE AREA Stand Up 1" – 1-3/4" 120 sf /ton Patio Flagstone 1" – 1-3/4" 120 sf /ton Patio Flagstone 2" 75 sf /ton