Probably zero mileage in this one, but since it looks to be copying alabaster wondered if it might be a known type of glass. Obviously an ashtray - 4.5" in diameter (c. 115 mm) - poor quality with plenty of bubbles etc. and shallow depression under the base with acres of wear - also fairly heavy. The odd pink inclusion marvered in is attractive - would have looked better with lots more.
For some reason makes me think art deco 1930s or 40s, but not the remotest idea of origin, and no marks.
thanks for looking.