If you ever end up with costume jewelry that can not sell you may be in the wrong venue. It is important to know that depending where you are selling your pieces the audience has to match.
For instance if you are selling designer beaded jewelry and pearl type jewelry; your crowd better be over 40 years of age!
Younger people tend to buy more solid pieces that make statements. Anything but bead jewelry designs! If your setting up at an outdoor fair after heavy metal type show you should have metal and raw rugged jewelry.
If your selling your jewelry on a retirement dinner cruise you should have stylish classics (beads, pearls and sets). Now Make Money Selling Designer Jewelry!!