Its just a decorative voronoi cube, printable without support.
I upscaled it to around 500%.
There are 2 versions, one of them has thicker / stronger lines!
Settings:
Material: Pla
Temp: Bed temp 55°, nozzle 220°
Layer height: 0.2mm
Support: No
Print time on X1C was around 90 minutes with 400% scale