Your contractor is not the plumber, electrician, carpenter, cabinet maker, or the painter. Your contractor coordinates all these jobs so each shows up at the right time, and that is a valuable service. He hires the above subcontractors, but you pay for them. Your contractor likely got the countertop samples from the installer he uses on his jobs. Keep after him to provide you with the information you want.

From what I understand, quartz countertop should be at least 90% quartz that is mixed with a resin binder. HERE is a link to more info on engineered quartz.

It's a prefab. It's probably an off brand from China. There is no free lunch. If you want a quality counter in quartz, go to a supplier, pick a sample from Caesarstone , Cambria, or similar and have it laser templated in your home by the fabricator, cut and polished and installed by them. Your contractor arranges the timing based on when base cabinetry will be/ has been installed.

If you are not happy with your contractor at this point, chances are you will be less happy as the job progresses especially if he is not responding to a simple and reasonable request of countertop samples. I’d let him go. You can learn and see the different countertop materials at your local big box store for free.

He likely has limited information on the off brand quartz; it's a builder material and cost is likely a factor. You can ask on checking what a major brand of quartz would run for your project; they are full slabs generally.

There is nothing wrong with prefabricated quartz countertops, but they do have limitations that can be exacerbated by your layout. If you've got a galley kitchen, you'll have no problems and won't know the difference between prefab and custom. When you start turning corners, you'll be getting seams that you may otherwise not be and it will be difficult to make quality seams.

Thanks so much everyone! We do have a galley kitchen.

Hello Maria, we would be happy to provide you with information on our product as you continue your decision making process. Cambria is a family owned, American made natural stone surface company. All of our surfaces are made of 93% North American mined natural quartz, they are also stain-resistant and nonporous. Cambria has been certified by NSF International (The Public Health and Safety Organization) for food and splash zones in commercial kitchens. That's the same certification as stainless steel. There is no safer countertop for food preparation. If you would like to learn more about our products or order samples of our designs they can be found at CambriaUSA.com. Good luck with your project, hope this helps!