Not CAC for me. The white is all wrong for CAC. The surface is not smooth, which is almost never seen on CAC. Temperature maybe cold. Looks like maybe brown in the white or edges of the dark base along the white. Almost if not every WV swirl maker made these dark base and white swirls. Some are impossible to separate, a few can be attributed to certain companies. Because of the difficultly identifying these is a main reason they have very little value, plus high numbers of them. Most of these have base glass that are actually dark purple, some are brown, some are green, and a very few are actual black. A CAC like this would be true black with bright snow white swirl and smooth slick surface.