The diameter is roughly 180cm and about 3000m of cotton were used to knit it (Magic No. 8 by Zettl). In the end I had 2345 stitches on the needle, which made for very long rows.
I really enjoy knitting lace, but normally don't have much use for it. Luckily my mom has a nice round bistro table and with a neutral table cloth unterneath, I think it will look great.