Drinking service - cut crystal - Belgian Art Deco glassware

Magnificent set of 6 antique cut-crystal stem glasses in Art Deco style, Belgian manufacture from the early 20th century, circa 1900-1920.
The shape, size and crystal quality strongly suggest production from Val Saint-Lambert, though not absolutely certain.
These elegant glasses are distinguished by their cut decoration with geometric lines characteristic of the era, as well as by their particularly refined faceted stem. The crystal is of remarkable quality, perfectly clear, transparent and luminous. It offers a superb brilliance as well as a clear, crystalline ring, features of fine old productions.
Under a UV lamp at 365 nm and in total darkness, the crystal shows a green fluorescence typical of manganese, a decolorizer frequently used in high-quality crystal manufacture in the early 20th century.
Height: 11 cm
Diameter at the rim: 7 cm
These glasses can be suitable for white wine, dessert wines, natural sweet wines, Port, sherry, or other liqueur wines. “The dimensions are visible in the photos, feel free to judge the use that suits you.”
The six glasses are in perfect condition. No chips.
Careful and secure packaging.