Upontheothers，hewasfoundguilty；andsentencedtobebanishedthekingdom，andtopaytheenormousfineoffourhundredthousandcrowns。
ItwasprovedthathehadforgedtheKing’sseal；that，inhiscapacityofMasteroftheMintofBourges，hehaddebased，toaverygreatextent，thegoldandsilvercoinoftherealm；andthathehadnothesitatedtosupplytheTurkswitharmsandmoneytoenablethemtocarryonwaragainsttheirChristianneighbours，forwhichservicehehadreceivedthemostmunificentrecompences。CharlesVII。wasdeeplygrievedathiscondemnation，andbelievedtothelastthathewasinnocent。ByhismeansthefinewasreducedwithinasumwhichJacquesCoeurcouldpay。Afterremainingforsometimeinprison，hewasliberated，andleftFrancewithalargesumofmoney，partofwhich，itwasalleged，wassecretlypaidhimbyCharlesoutoftheproduceofhisconfiscatedestates。HeretiredtoCyprus，wherehediedabout1460，therichestandmostconspicuouspersonageoftheisland。
ThewritersuponalchymyallclaimJacquesCoeurasamemberoftheirfraternity，andtreatasfalseandlibellousthemorerationalexplanationofhiswealthwhichtherecordsofhistrialafford。
PierreBorel，inhis“AntiquitesGauloises，“maintainstheopinionthatJacqueswasanhonestman，andthathemadehisgoldoutofleadandcopperbymeansofthephilosopher’sstone。Thealchymicadeptsingeneralwereofthesameopinion；buttheyfounditdifficulttopersuadeevenhiscontemporariesofthefact。Posterityisstilllesslikelytobelieveit。
Manyotherpretenderstothesecretsofthephilosopher’sstoneappearedineverycountryinEurope，duringthefourteenthandfifteenthcenturies。Thepossibilityoftransmutationwassogenerallyadmitted，thateverychemistwasmoreorlessanalchymist。Germany，Holland，Italy，Spain，Poland，France，andEnglandproducedthousandsofobscureadepts，whosupportedthemselves，inthepursuitoftheirchimera，bythemoreprofitableresourcesofastrologyanddivination。