Wonderful Heavy Art Glass Hand Blown Martini Stemware

This is a very beautiful heavy hand formed art glass drink goblet stem. It has several different techniques and colors from turtle shell browns to confetti yellow and oranges, the applied stem part is clear. It measures 7 and 7/8 inches tall and 4.5 inches across the rim. This is in excellent condition, no chips, and no cracks or visible signs of wear. I have no idea of the age or maker, it is an auction item.