Thanks for the welcome and the response! It is about 6" tall and about 6" at its widest diameter. The inside of the neck does look like it is ground for receiving a stopper, it looks frosted. The oily appearance kind of gives it almost a satin type sheen. When held without light you can see your reflection (although it is dark) but with light you can not see your reflection. With out light it looks like a very dark purple, almost black. It is very hard to see the thumbnail type print or pattern it has without light. The pattern is actually on the inside of the bottle. When held up to the light it turns a bright purple maybe with a splash of red or pink and is very easy to see the pattern. I think the change of color is maybe from the pattern. It is not iridescent like carnival glass.