This lampshade has been in my family for quite some time I've looked for markings I've gone over it a thousand times and haven't been able to find out much about it except that I was told that my great-grandmother had it commissioned she liked the peacock shade from Tiffany but didn't like all the colors so she wanted a peacock shade that represented her that's all I have for now.
20 inches at base of shade and 5 inches on top
It was my great grandmother's and from what I was told is that the base is not original something happened to that in a move I don't know if it was lost or whatever what not but the shade she had commissioned from Tiffany as far as I know that's what I was told she liked the peacock shade she just didn't like all the colors and she likes blue and so she had one commission that was mainly blue