The enigmatic portrait of Monna Lisa which is thought to be Lisa Gherardini a noble woman of Florence and Tuscany, who was married to Francesco del Giocondo at the age of 15, painted by Leonardo Da Vinci is partly famous do to the new technique used by Da Vinci "Sfumato".
SFUMATO is a subtle transition between light and shade. The portrait never made it to the hands of the owner due to non payment, according to historians and was bought by King Francis I of France and it is now property of the French Republic!