Sorry to hear that Rodja. By all your posts, I can tell you're a real quality guy, and it would ultimately be her loss is she lets you slip through her fingers.
Having said that, I'd say give her the space she wants and don't "close the door" to getting back together. However, it is in your best interest to find or be around other girls now. This does 3 things:
1. it's for your personal well-being/ego/distraction
2. it will help you get on with your life by being available to other potential life partners
3. girls are generally MORE attracted to a guy when some other girl is attracted to him (I'm not saying flaunt/make her jealous or even let her know - just saying you socializing with other interested girls INCREASES your odds of her wanting you back.
My father gave me some advice when I broke up with my ex (2yrs ago). He told me to "not worry about HER feelings. Just worry about your own."
He did not mean be mean or inconsiderate to her, but make sure everything you do, you do for YOU and not HER first. Women are much better at manipulating emotion, and the guys often care too much for the girl, and show they care too much for the girl when the girls have already gone beyond that.
So that's my advice: do not "pine" for her, but rather get out there now in the social world. You don't have to "date" these other girls, just be around them, feel popular, etc. Do not flaunt or even "tell" her you're doing this - chances are she'll hear about it from someone anyways.
When it comes to relationships, women are NEVER STUPID. They know what they want. When they say "I don't know what I want", that means "I know exactly what I want, but I don't know how to get it right now, so I need to keep certain options open in case."
If she truly wants to be with you, then she'll be with you.
If she doesn't want to be with you...well, then she's going to regret leaving you at some point in her life...
And as for your necklace - understand that the "power" we derive from such devices are just energy that WE'VE placed in them. This energy is returned to us when the item is lost - it was just a conduit. ie: it's replaceable.
I'm not a religious guy either, but I know a lot of ppl get strength from wearing a cross. I'm quite sure though, that a really strong willed man named Jesus did NOT have such an item around his neck to derive his strength from. The "new" Rodja about to be reborn doesn't need this either.
Best solution: a girl (new or old, leaving that ambigious) buys you a new necklace with even greater meaning. Best of luck bro!