The 35-carat pear-shaped diamond Marie de Medici wore at her coronation in 1610, one of the world's most famous gems.

New studies show that the wealthy are pulling back from stocks and stashing more of their money into real estate, art and even diamonds.

A recent survey from Harrison Group and American Express Publishing found that the wealthy have cut back their allocations to stocks dramatically since the economic crisis. In 2007, the top one-percenters (by income) invested 76 percent of their savings into stocks and financial investments. Now, it’s closer to 46 percent.