The âBlack Kat Pumpkin â is sure to make a statement at your nest Halloween party. âBlack Katâ is dramatic, dark color pumpkin that will get darker in nature as it matures until itâs almost black, a true inspiration when creating in the glass studio . This forever pumpkin is measuring about 4 inches wide and 3.5 inches tall and topped with a perfect glass stem. Using classic glass blowing techniques, this beautiful gourd will be a focal piece in your home.