"Crystal Glasses"
Val Saint Lambert – Set of 11 double-layered cut crystal wine glasses – “Chinon” pattern – produced in the 1950s–1960s. Mid-20th century.
Each glass features a bowl in a different color (blue, green, pink, mauve, amber, etc.), cut in inverted triangular panels with a “crushed frost” decoration underneath.
Slender stems, a small bow, and a star-shaped base: all the hallmarks of fine Belgian crystal.
As is often the case with this pattern, the glasses are unsigned, which is perfectly consistent with the production of this period. 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato