This is a beautiful vintage swirl striped marble that has been in our family for many years.  It is approximately 10/15” in diameter.  It is very dark purple and is almost perceived as black.  The white swirl design through it is flowing and intricate.  Some of the white swirls as they go down into the marble take on a lavender tint.  Perfect exterior, no scratches or marks of any kind.  Believed to be a Christensen because of the detail and intricate swirls. See all photos for details.