The Barley decoration is based on the classic grain motif of traditional guilloche engraving. The running, close-set pattern gives the handle shiny, sophisticated allure.

— Click to play: Riccardo Renzetti, Guillochè 2016

Different to freehand engraving, which is suited to more naturalistic and free decorations, guilloche engraving is typically mechanical and reiterative. It allows for infinite different patterns by varying the parameters of the process, which work in concert with the technician’s technical sensibility and aesthetic judgement.