This vase was designed by Franz Voigt around 1940. Alexandrite glass changes color according to different lighting conditions. The glass appears lilac in natural daylight or yellow artificial light, and blue in fluorescent, white light. Factory name on the bottom. With its original box and certificate of authenticity included. Classical shaped vase on a massive base hand cut into eight edges,hand blown of ecologically friendly lead-free crystal. Hand cut and hand polished to a high gloss. “King of Glass, Glass of Kings” – such is the slogan tagged to the world famous glass manufacturer company, Moser. The epithet stems from how the company attracted royal clientele since its beginning in 1857, including the Austrian Imperial Court, Pope Pius XI, the Turkish sultan Abdul Hamid II and the king and queen of Portugal, Luis I and Maria Pia of Savory. Despite the high regard and the world famous reputation, Moser is surprisingly widespread beyond palaces, owing it to the cult following it built among collectors of glassware. It remains the most collected of 20th century decorative glass.