Hi Cat,
For reference, here is a close of up of one of our forest-free quarter sawn white oak floors with a 50/50 Jacobean Ebony mix. I would venture to guess that the picture in question is a 50% Jacobean and 50% walnut mix. Beautiful floor Rabaut Designs!

FYI Rabaut, forest-free means the floor in my picture came from rescued logs of storm downed white oak trees that grew in Buckhead. Forest-free logs are all we mill!