early life and training romain-vincent jeuffroy, a renowned french gemstone engraver and medalist, was born in rouen, france in 1749. without the guidance of a master, jeuffroy learned his art by imitating an engraved stone that had come into his hands. this self-taught approach would eventually lead to his sponsorship to perfect his craft in rome. artistic career jeuffroy's active period spanned before and during the french revolution…