Glass paste vase 1970s abstract decor signed Biot monogram g r

Very nice vase in glass paste, very heavy 1, 150 kg, and very thick in perfect condition. Rare glass paste vase from the 1970s abstract decor sign biot monogram g r. Background colors light anise green, yellow, red, sky blue, dark green. Height about 16 centimeters, diameter of the vase codend approximately 5, 5 centimetres. Intermediate diameters approx. 11.5 centimetres. Outer diameter of the neck about 7 centimeters. Inner diameter of the neck about 4.5 centimeters.