Which artist created the Holy Grail chalice seen in the painting by Da Vinci The Last Supper?
I’m a little puzzled by the question. There is no “chalice” or “grail” in the “Last Supper.” Christ’s right hand is gesturing towards a small, transparent, flat-bottomed glass of wine and his left towards bread in a representation of the Eucharist. There is a little silver cup near the near-edge of the table in front of St. James (the recoiling figure to Christ’s left), but it is playing no role in the Eucharistic moment. It, like all of the elements of the painting, was created by Leonardo himself. If you scroll down on this site, you will see a 16th-century copy of the painting that allows you to see details no longer discernible in the original.
