I would have guessed that this is a laminate.

The reason I think it's wood is that the pattern doesn't seem to repeat,

I would guess a rift cut white oak with a grey stain, maybe. If it is it might be a veneer but not a laminate.

I also think that's a possibility, except my kitchen cabinets are rift cut white oak, and the lines are much thinner.

Maybe zebrawood

I think it's laminate too. Could be a zebra wood. Definitely not oak.

This is rift cut white oak with a light stain, not as gray as the original post. Place the grain horizontally rather than on the vertical, add darker stain and it is quite similar and less expensive than zebra wood...

Thank you, all. I'll have the cabinet maker look into both the rift cut white oak and zebra wood.

Anyone have an opinion about rift cut walnut? That's been suggested to me, although it seems there are many different varieties of walnut with differing features.

Sjh, those are stunning!

SJHockey - What a gorgeous kitchen! And thanks.

The reason I think it's wood is that the pattern doesn't seem to repeat,

Sorry, missed this before. The days when laminate had to have a limited repeat are long gone. Imitation stone patterns, for example, may let you have five feet or more of counter with no repeat at all.

Thank you, roarah and granny - we're very happy with it.