Sorry to say, but it most likely means it is fake. Google DBJ on ebay and you will see that they produce silver or gold overlay (so gold plated over silver) cubic zirconia items. Sorry about that.
925 DBJ likely refers to sterling silver jewelry, as 925 is the standard stamp for sterling silver (92.5% silver content). Gold jewelry is typically marked with a karat stamp, such as 10k, 14k, 18k, or 24k to indicate the purity of the gold content.
Madidi For a review of the restaurant see: www.madidires.com/review-dbj-001.htm
It means u were taken. put a magnet to it ,if it is drawn to it it is metal, but not silver. my wife got rooked on about 10 pieces from a well known on line store.
It's probably a maker's mark indicating who manufactured it (or who the person who counterfeited the item wants you to thinkmanufactured it).Since they're so easy to forge, it doesn't really "mean" anything.