looks like New England Field Stone to me, which can be found at just about any stone yard in the North Eastern United States. You can get field stone in any state, but it will vary in type and color because field stone is just what ever is dug out of the ground in your locale.

This new construction
home was designed to evoke the feeling of an 19th century farm house that was
built in stages over the years. The stone facade was salvaged from a local farm
house that was being demolished. Breaks in the the stone facade were purposely
designed to represent the expansion of the house over decades as the the family
grew and prospered. While the materials and details give the look and feel of
an authentic centuries old house, the design of the interior spaces is based on
the needs of a modern 21st century family.

The stone was salvaged
from barns in Bucks County, Pennsylvania. You could reach out to Carl Landis,
484-824-1660 and let Carl know you were interested in similar stone used on the
Archer & Buchanan Architecture project called Starry Night Farm.

Beautiful job on the design and execution. I love when architects and designers incorporate the old with the new.

The facade recalls historical buildings with structural masonry like the 1840 stone mill in the New York Botanical Gardens (https://en.wikipedia.org/wiki/Lorillard_Snuff_Mill) - How did you achieve a look that is so similar (and stunning!), but only with stone at the depth of the facade?