Heavy Wine or Burgundy and Crystal Art Glass Vase

This is a very thick heavy hand blown art glass vase in clear and either wine or burgundy swirls. It has some natural bubbles in the glass and the bottom is sanded smooth. It is a very excellent quality piece. It isn't marked but looks like Murano glass quality. It measures 3.75 inches tall and 4 inches across. It is in perfect condition, no scratches and no chips. I have no idea of the age, it is an auction item.