Sylvain Diez ( - ) is a painter. Sylvain Diez s works have been put up for auction numerous times, with realized prices varying from 138.12 USD for PORTRAIT OF A LADY, POSSIBLY QUEEN ADELAIDE in 2006 to 254.99 USD for PORTRAIT OF DUCHESS MARIE OF SAXE-MEININGEN-HILDBRUNGHAUSEN in 2006 , based on the size and medium of the artwork.