Vintage Uranium glass bowl custard and clear in great shape.

The bowl has opalescent trim and a ribbed spiral design which looks especially striking under black light. 
It measures 7.25" across the top, 3.75" across the base, and 2.75" high

It weighs 1 pound,  3.9 oz.

It is nearly perfect; I found a tiny rough spot on the outside of bowl near the rim, probably a small chip rather than a manufacturing defect.