The technique of manipulating adjacent vertical ribs with pincers to form a diamond pattern. “Nipt-diamond-waies” was the term used by the English glassmaker George Ravenscroft (1632-1683) in a 1677 advertisement for his new lead glass.
Footed Bowl with Filigrana
full length video recreating entire object
Enameled Goblet
full length video recreating entire object