This shade is a stunning piece. It is heavy & the glass has a fluted effect around the top & bottom is stunning It is very tactile with the white design being very tactile & is very old probably 1940 or 1950 Looks great as a ceiling light but could be used on a lamp I can only say study the photos to see it’s beauty. Though the quality of the pattern & fluting can’t be seen its so much better in real life It is quite heavy much thicker glass than similar ones I have listed. Hole 3 cm across it fits a ceiling rose. Bottom 11 cm across 19 across the middle approximately it’s harder to measure 15 cm tall Amber Champagne Coloured Gold Pearlised White Design Added Glass Light Shade Retro Vintage Kitch Excellent 1940 Or 1950 Mid Century