GeekArmory.com Geek Girl Jewelry http://geekarmory.com/category/geek-wear/geeky-jewelry/
iNecklace from Think Geek -- Perfect for the ladies!
That's a necklace I'd wear all the time!
How to win at Valentine's Day. I'm in love with all of these (especially the serotonin necklace)
Planet Saturn Necklace - stainless steel chain geek necklace nerd necklace science freak space galaxy fun quirky funky cute funny jewelry I
Science & math jewelry. Stuff for geeks with taste.
Etsy necklace for all the girl gamers. Now that's geek chic!
Marvel Avengers Loki Scepter NecklaceMarvel Avengers Loki Scepter Necklace,
Look what I just made! I'm a total theatre geek myself so Iove it! - Theatre Gifts, Drama Gifts, Musical Theatre Geek, Comedy Tragedy Necklace with Hand stamped Disc - Glee - Gleek - Drama Club. $48.00, via Etsy.
Do you have to wear two necklaces if you consider yourself a geek and a nerd?