Crystal chandalier?

Found a big chandeliar in the loft. 100+ pieces. Unfortunately a few pieces are broken or missing. I’m not sure whether to flog it on ebay or chuck it. I’m guessing that if it is crystal then it would be worth keeping, what do you think? Also, how can I tell if it is crystal or not?

Pic of two pieces below:

http://patrickmorrissey157.mysite.freeserve.com/