Can this be custom made with diamonds instead of black sapphires? The only alternate option I can see is 22-6091-8, but that has black on the band.
That ring is only available with black sapphires. We do have a number of bands with diamonds but not exactly like the one you were looking at. You can review those rings here - stone rings
We do also have a custom ring creator where you can play around with the materials to create your own ring. Here is the link to that page -custom ring design