Web site: https://www.haresfur.co.uk/
Designer unknown. Striking Incalmo Graal vase with skulls in red and black. Unsigned.
The shape is reminiscent of Scandinavian designs but incalmo pieces, where the glass is made in sections and fused together under heat, are rare in the Nordic countries. This was sourced in the UK so it is more likely it is a piece of studio glass from somewhere like Stourbridge.
A highly unusual piece, probably unique.