Okay, I have some information on the necklace worn by Lily on Gossip Girl Season 3 Episode 12: The Debarted. The necklace is through a brand I am assuming is called Green Beads. However, there is no data on the site.
How did I find this out? Basically, I work with someone, who knows someone, who works with someone?
Got it? Hopefully they will have some information up soon.