Antique Slag Glass Lamp

It’s antique slag lamp, I believe it’s from the art Nuevo period so 1920ish. It belonged to my grandmother. It’s been in her home for years from what I remember growing up. I don’t know much about it to be honest. Based on my research, the lamp dates around art nouveau. It has a lot of detail work on it and nothing is broken nor cracked. The lamp for its age, it’s in great condition. Yes, it does turn on! . If you need anything additional photos, or details please let me know and I’ll happy to help. Measurements 22 height and 18 wide.