Rare 1957 Vaclaw Horacek For Josefodol Glassworks Neodymium Art Glass Vase MCM

Made in Czechoslovakia, this exquisite Modernist piece is made from glass infused with Neodymium, allowing it to change color in relation to a light source. (Also known as Alexandrite glass.) In daylight and LED it is a lavender-pink but will transform to a cool blue under fluorescents.
Blown into a mold, with silhouette established at the rim, wave-like shapes in 4 vertical panels grow larger heading to the base. The depressed frosted surfaces were made using a hand-applied Battuto-like technique (a grinding wheel on cold surfaces) making the piece very tactile. Deep acid-cut notches run down opposing sides while slightly raised glass runs ropelike down the other two sides.
Josefodol Glassworks was restructured into Zelezny Brod Sklo (ZBS).
Measurements: 8" tall, 2 1/2" at widest point.
Excellent Condition: no chips, cracks. Very light scratching on base.