For my engagement ring. I am picking my stone, and my boyfriend is then going to have it custom made. I would like a halo setting. This is the stone:

There is a video here:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=251130919751
Since this is my first time buying, I was also wondering how the GIA process works. Will the seller send it directly to the GIA labs? Or do I send it after I receive the stone? Or is this something I should be asking the seller himself?
Thank you all!! I appreciate all your help!
eta- I think it has a window in the lower left hand side (if I actually got the window concept right) but it doesn't seem to bother me that much. Is there any other things you find in this stone?

There is a video here:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=251130919751
Since this is my first time buying, I was also wondering how the GIA process works. Will the seller send it directly to the GIA labs? Or do I send it after I receive the stone? Or is this something I should be asking the seller himself?
Thank you all!! I appreciate all your help!
eta- I think it has a window in the lower left hand side (if I actually got the window concept right) but it doesn't seem to bother me that much. Is there any other things you find in this stone?