Guillaumet Gustave Achille Guillaumet ( 1840 - 1887 ) was a French painter. Guillaumet Gustave Achille Guillaumet s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 3783.83 USD for Prière dans le désert in 2004 to 23694.75 USD for CAVALIERS À L'OUED GUSTAVE-ACHILLE GUILLAUMET ; HORSE RIDERS BY THE RIVER in 2011 , based on the