If a gem has fallen off your costume, it is easy to re-attach it.

You will need a replacement gem and suitable glue.

You can use Gem-Tac, E6000 or B7000 glue. If possible, try to stretch the costume out (as if it were being worn). You might like to use a bit of cardboard or a bread board.

Simply apply a dab of glue to the back of the gem and then press it onto the fabric. You may like to use tweezers to assist. For best results, leave for 24 hours for the glue to set.