The Sustainable Vase arose from a problem - what do I do with excess material? I have leftovers of porcelain in the production from eg. my lamps that I would otherwise throw out. Which I now recycle and mold the Sustainable vase off. The same goes for glaze residues from tests and the last residue in the bucket.
Hence the name Sustainable, as almost nothing is wasted.
The vases come in many color combinations and rarely some that are the same.