Avis d’Experts is an art and antiquities expertise platform led by Christian Sorriano, an art and antiques expert, auctioneer at the Lausanne Sales Hotel, and expert near administrative courts. The site brings together information and services for people researching, buying, selling, or assessing works of art. Its database features approximately 130,000 quotations and covers paintings, drawings, sculptures, engravings, photographs, and other art from the 15th century to the present day.

Visitors can search artists by name, style, theme, or technique, and browse categories including painters, engravers, sculptors, glassmakers, photographers, ceramists, and drawers. The platform also provides a dictionary of listed artists, artist ratings, and information about exhibitions, museums, galleries, associations, and auction houses. Its services include approved quotations, estimates, and appraisals, alongside resources such as an art dictionary and links to related organisations.

With tools for both discovery and valuation, Avis d’Experts serves as a reference point for exploring artists, artworks, and the art market