Miguel Amador founded Three Brothers in 2018 after a decade in the stone industry, and the company evolved into Cornerstone in 2021. Now joined by his brother German and sister-in-law Amanda, this dedicated trio brings passion and family values to every project, ensuring a personal touch in their work.

At Cornerstone, we are committed to transforming our clients' dreams into reality. Our family-run business embodies a deep passion for the stone industry, specializing in fabrication & installation of stone and engineered surfaces. We thrive on delivering innovative and high-quality products that reflect our commitment to craftsmanship and excellence.​​​​​​​​​

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We offer a variety of selection options so you can choose materials that complement your design and lifestyle. Selections can be made in our showroom, at a local distributor, or virtually for your convenience. Additionally, we offer in-home consultations, allowing us to provide recommendations based on your specific space and needs. No matter how you choose to work with us, we are here to ensure you have a seamless and enjoyable experience throughout the selection process. 

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When your project is moving forward, we will schedule a template appointment to take precise measurements, which will allow us to move forward with fabrication. We pride ourselves on delivering a fast turnaround to keep your project on track, and once fabrication is complete, we'll arrange your installation promptly to ensure a seamless transition from production to execution.​