It is a bowl with a parametric crystal surface on it. It is single, solid surface, so its ready to 3dprint. Its' diameter is 8,5 cm outside and 4,2 cm inside.
Also there is my photos with 3dprinted model.It is modelled on Rhinoceros5 and Grasshopper.
You can get grasshopper script I use in this site: https://www.food4rhino.com/app/mesh