Sandstone vase enamelled abstract patterns

I propose a vase in enamelled sandstone with muffled hues of carmine, icy blue and brown. His abstract motifs seem to evoke mysterious and nocturnal landscapes. This vintage piece is in perfect condition (signature to be determined), is about 15 cm high and has a diameter of about 11 cm and weighs just under 700 grams.

Ref. : ZQ34KV1C