Lulu Frost Big bang necklace dupe:  $2.30 (BIN:  $15.89)(Original:  $570)

J.Crew factory stone and dotted flower necklace dupe:  $2.06 (BIN:  $7.06)(Original:  $68.50)

Both off eBay.

I didn't know the first one was a dupe at first, but I happened to see the original sometime after.  It almost always happens like that!  Whenever I see something nice on ebay, it almost always is a dupe of some designer.

The original:

The dupe looks a lot cheaper than the original, but it still looks nice enough.  You can mainly tell the difference in quality in the stones.

Still, for the price discrepancy, there should be a huge different in quality!  I have seen a more expensive dupe that does look pretty identical to the original though.