I'm a newbie to diamonds. I researched them about a year ago and understand the 4 C's and the details of each. Its slowly coming back. Anyway, a year ago I could search websites and find plenty of .5 carat and smaller diamonds in a wide range of qualities. For example (I got this from a post that dated back 10 months ago on a forum) "http://www.pricescope.com has a .41 ct., G, VS2 with a GIA report listed for $631. There are other stones in that price range too." Now I can do a search and get no or very few results. It's the same way with other popular online dealers. What am I missing? Where do I look? Thanks a bunch!