Wow! This is a think, black glass an amazing dark amethyst hue when held up to the light. Beautiful hand painted details all throughout and so large, it could be a vase, but I do believe they are drinking glasses. Now, you have noticed those "Murano" stickers that I haven't mentioned. I unfortunately don't believe these are authentic Murano so I would disregard this.
Excellent conditions with no chips, cracks, or nicks.
Just over 8 inches high and 3-3/4" in diameter across the top and 3-1/2" on the bottom.