I have a few smaller boutiques here who have someone who makes jewelry from broken Chanel pieces. She will scoop up broken pieces and remake them. They are still expensive, but pretty. I like the necklace you show because it looks like something Chanel would do-it's not a totally out there piece.
But for that price I wouldn't believe it's real. I buy alot of jewelry and the fakes have gotten really good with all the details. Buy it if you love it-it's a ok price, but don't buy it thinking it's the real deal in all ways. I would want to at least know the CC on it was real, if it's not, than it's overpriced. No way would I want a fake CC attached to a strand of pearls.
Can you get photo's of the CC and try to get them looked at in the jewelry thread?