Mass light lamp

The body of the pendant is made from milled and polished marble or spunn & polished metal (brass or copper). The brass and copper versions are polished but not lacquered so the metal will darken and patinize over time. The glass shade is made from mouth-blown and acid-etched opal glass.

https://www.andtradition.com/the-collection/7-lighting/1340-mass-light-na5/