Seguso Vetri d'Arte.
Model No.: 11692.
Year: 1957
Designer: Flavio Poli.
Executor: Archimede Seguso
Colourway: grigio violetto (transparent brownish grey covered with transparent light violet).
*Neodymium / Praseodymium bear - Sommerso glass .
13 cm tall and 6 cm large with a length of 13 cm
Pictures were taken in a white box with white light lamp and it turns out with a green color, but if you look it at daylight (last picture) it looks grey with violet shadows
Ref: Heiremans's book *Seguso vetri d'arte 1932-1973*
Neodymium glass (also known as Alexandrite glass), changes colour according to different lighting conditions. The glass appears lilac (or sometimes pink) in natural sunlight or yellow artificial light, and smoky blue/green in fluorescent/white light. This is due to the presence of Neodymium oxide (Nd²O³) in the glass. Glassware containing Neodymium was produced in several countries, including Scandinavia, Italy, and the Czech Republic. The shades of lilac, pink and blue can vary greatly depending on the glass mixture