http://www.articleheaven.net en-us editorial@articlealley.com What comes to your mind when you think of Mona Lisa- a masterpiece, beauty, elegance…? A factor that contributes greatly to its mystic charm is that it is an oil painting. This form of painting is perhaps the most complex of them all. It involves a hug... http://www.articleheaven.net/the-enigma-of-oil-painting-1463953.html 23rd March 2010