Heavy glass vase large, almost square, block pattern

Thick glass vase, square blocks pattern. This very heavy vase (more than 2.5 kg!) is just not square. This is because the glass is between 0.5 and 0.7 cm thick, we think. A very enchanting vase, because the blocks, especially the blocks at the top, give a somewhat distorted effect. The upper blocks have a stripe pattern, which can be felt on the inside and looks a bit like a fingerprint. Funny!

Weight: a generous 2.5 kg!
Dimensions: 13.5 x 13.5 x 23 cm