For flat fieldstone the dimensions are 1/2 sqft. to 2 sqft. area wise and for stones with corners it is 6" to 12" (height wise) with a depth of 3/4" to 1" for each.
Natural Fieldstone can easily be installed to emphasize the indoor and outdoor architectural features. It is a good-looking material for surrounding a fireplace, cladding a wall, post etc.