Iridescent glass butterfly vase, Loetz, Kralik, art nouveau

Art nouveau butterfly vase in iridescent glass. Very beautiful blue and green colors, bright and iridescent. No signature, probably from the Loetz or Kralik factory. In very good general condition, note a slight chip on the neck. Dimensions. Height: 9.5 cm. Width: 13.3 cm. Neck width: 8 cm.