This isn't a scan, it's a symmetrically beautiful 3D sea shell created from scratch in Fusion 360. It has a number of detailed ridges, has a hollow interior which prints without supports and is great for seeing how smooth your printer will handle gradients. To get the best results print in 0.2mm PLA and for a really impressive luxury look print with glitter or pearlescent PLA such as “Prusament Galaxy Black” or “Prusament Pearl Mouse”.
The author hasn't provided the model origin yet.