To bros that are considering to buy from Bluenile, under the diamond selector, limit to only "Signature Ideal". The diamonds with this cut has a GCAL report, which you can download the PDF and view the optical symmetry scope image, as well as inspect the H&A for the view on the bottom pavilion.
That's something i came across when i was searching for my diamond as well. Of cos it will also bump up the pricing due to it being Blue Nile Signature Ideal cut, but at least it ensures you get a well cut diamond without seeing it physically. Hope it helps.
Example:
Bluenile Diamond URL: Search for Diamonds by Shape, Size, Quality & Price | Blue Nile
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Yes. The GCAL is an extra certificate for Blue Nile Signature. But it costs a premium too. Another thing is that the reports are B&W which I feel does showcases the images clearly, but it is nonetheless better than buying blind without extra information.