Some fake paintings have been so convincing, they've made it all the way into auctions at Christie's and Sotheby's auction houses.
A lot of the fakes and forgeries today — Warhols, Da Vincis and more — are made in China. In this clip from the CNBC reality series "Treasure Detectives," art detective Curtis Dowling, says that famous artworks are copied by the thousands in places like Shenzen.
In an age of perfect digital reproductions that can be doctored to look like valuable original paintings, there are a few factors buyers can consider to determine a painting's authenticity.