Hi,
I have 3 of the same Jon Richard necklaces from Debenhams available. Originally bought for my bridesmaids but then I ended up getting matching necklace and earring sets. These come in plastic packaging. Originally £22 but brought for half price.
Can be seen here http://www.osoyou.com/items/Drop-Pearl-Crystal-Y-Necklace/37484_JRNW018500-125.publisha
They have quite a short chain so would be good for smaller bridesmaids or as chokers. You could also buy some kind of extender to lengthen the chain. Would be looking for £5 each or all 3 for £12 plus postage.
Thanks.