Investing in Jewelry

One thing I find interesting that people don't do quite as much now is to invest in jewelry. I guess because it's not so portable as other stuff. My grandmother owns quite a bit of jewelry and that is exactly how she looks at it. Jewelry certainly doesn't go down in value at least not most of the time, so although it may not be earning returns like the stock market or real estate, it's still a solid investment vehicle. The big problem is where to keep it. I suppose you can keep it locked up in a safe or a safety deposit box, but then it wouldn't get worn as the creator intended.