Although pearls value went down from 2000 to 2010 the trend is changing. Pearls have been traditionally a worse investment than branded watches or Gold, but climate change has something to say.
South Sea Pearls like any Saltwater pearls need clear and pristine environments to grow high quality pearls, with round shape and good luster. Pollution and global warming affects the quality of South Sea Pearls harvest, so it could be more difficult to find pearls with enough quality to suit the market, driving South Sea Pearls price up.
It should be noted that of all the pearls that are collected each year only 2% are South Sea Pearls, due to the waiting time for the oysters to grow and because it is a more complicated and less crowded process than with freshwater pearls.
So South Sea Pearls value will definitely go up in next years.