Nowadays, a lot of long-term investors are looking to diversify their investment portfolios by investing in unique, different and even exotic assets. Some may prefer to invest in cattle, some in wines, while others may prefer to invest in rare coins or authentic, fine jewels. There is one investment type that is gaining popularity recently and that is artwork. Aside from appreciation in value, you can even show support to artists or even become a stockholder of more classical paintings. However, as with any investment, there are pros and cons of investing in art.