I bought two cups and saucers from ebay for quite a cheap price for this. if you want to make this, take a look on ebay. Hope you like it!!
if you like, paint the tea cup and saucer. if you have some proper model paint, small brush and a steady hand, you could paint a pattern onto it, like flowers, spots or stripes.
glue the tea cup and saucer together.
assemble into a necklace. adding a fabric bow too would be cute.