The delivery was a complete fiasco.  Delivery people lost control of pallet jack and dropped the pallet off the lift gate breaking more than half of the 25 cases.  Of course, Wayfair replaced it at on extra charge.  More of the replacement tile was broken on delivery.  Of course Wayfair gave me credit.  Now the slate.  I did expect rustic, but unless you like it, I would avoid.  High variance with the thickness, some really thin, some really thick, so sorting is required to attempt a flat end product.  There is a variance with the 12×12 size also with some pieces being an 1/8" bigger or smaller.  Might as well forget about perfect joints at corners unless you plan to trim the off pieces.