Are you saying your perimeter and island have different corner radii?

I don't see an overhang in that second photo that would allow space for a stool, so not sure why there is an overhang there?

I've done 2 kitchens with different fabricators and all my radii matched, even on the overhangs.

After installation you can't add material to a rounded corner to square it off. You might be able to square off a corner if you have enough overhang that you can cut back on both sides of the corner, but there is always risk of damage to counters, cabinets, etc.

Can you take another picture from further away which includes more of the kitchen, and hopefully shows both radii?

I would expect them to all be the same, and to match whatever the contract says. Both times we've had counter pieces made (with different fabricators) we've had to initial the radius section, which included a diagram of what we were choosing. Check to see what yours says.

As far as fixing--I can't tell why there is more of an overhang to begin with for the second photo. If there's not a particularly compelling reason for that then I'd ask them to modify that piece to match the radius and overhang of the piece in the first photo.

View of entire kitchen

Overhang is for counter seating.

I'd want it to match but I also think I'd be okay with it and let it go because overall it looks great. If you have any klutzy household members, the really round corners will poke them less (and hold up better, too).

(The overhang is really shallow for seating--that is why people are confused.)

You can go from smaller radii to larger, but not the other way. It looks fine.

When I had my kitchen counters fabricated, my kitchen designer was very meticulous about stating in the fabricating order about all corner radii to be the same, as I have a modified gally kitchen. I think your kitchen is lovely. If the different radii in your kitchen bothers you that much, look into how you can get them all matching.

Now that I see the bigger pictures, I think it looks good. Beautiful stone. I think once the kitchen is all finished you'll find it balances.

I think you have a different issue, which is that it doesn't look like you have enough overhang for seating if that's the intended use of that counter. If you measure the underside of the counter from the edge to the cabinet, how much space is it? Solving for that might give you a chance to address the corners.

Is there a cut-out for your range top? Will that section of countertop go back to the fabrication shop for the range cut-out? Sorry, I cannot tell from these pictures what is going on there. Lovely stone, it's gorgeous!

“Is there a cut-out for your range top? Will that section of countertop go back to the fabrication shop for the range cut-out?”

@cupofkindnessgw - under the OP’s exhaust hood appears to be a location for a cooktop, not a rangetop or range. The counter cutout for a cooktop is often done onsite, i.e. in the home. That is because the cooktop cutout can make the narrow counter strips in front of it and behind it too fragile to put on a truck from the fabricator’s to the home. Consequently, the cooktop cutout is done onsite. When the cutout is done in the home, there should be a steady stream of water on the blade, and a powerful shop vac for the dust.

@M Miller Good explanation, thank you! Since the sink is already in place, I wondered about the cooktop. Thanks again!

It's the end overhang that's smaller....they might have enough room for stools on the BACKSIDE of the island.