Bird's Eye Rhyolite 'Dream' 24"x12" pillow caseBird's Eye Rhyolite from Chihuahua, Mexico Rock type: spherulitic rhyolite Photomicrograph: reflected, cross polarized light Mineral and color guide: felsic spherulites: pearlescent white iron oxides & hydroxides: orange to red quartz: black Our soft velveteen pillow cases add the perfect geology accent to any room. Easily update your style with these covers by converting an old throw pillow. Like all professional upholstery fabrics, our velveteen has