Thick Heavy Chinese(?) Acid-Etched Vase - Weird

Here's a weird piece, its like 2 inches thick and weighs like 10 pounds. Hard to see but there's a rainbow coloring inside the etching, sort of worn off. My guess is Chinese, but I know absolutely nothing beyond that, never seen anything like it before except on Roadshow, 2 thick cobalt-glass bong-shaped Chinese vases, but those were older and different. Look familiar to anyone?