10/16/2026
At Cosmos Marble & Granite, you’re more than just a client, you’re part of the family!
John Karagiorgos - Owner
With over three decades of experience in the natural stone industry, John Karagiorgos brings a wealth of knowledge, craftsmanship, and dedication to Cosmos Marble & Granite. Originally from Greece, John began his journey in the countertop industry in the 1990s, building his business on the principles of hard work, integrity and exceptional quality.
Throughout his career, John has witnessed the evolution of the stone industry while remaining committed to the timeless values of skilled craftsmanship and attention to detail. Hi hands on experience, extensive industry knowledge, and dedication to customer satisfaction have helped establish the foundation of Cosmos Marble & Granite. Beyond his professional accomplishments, John is a devoted family man who values nothing more than spending time withhis loved ones. A proud and loving grandfather, he especially cherishes the moments spent with his grandchildren. His strong family values are reflected in the way he approaches his business, with care, loyalty and a genuine commitment to the people around him.
At Cosmos Marble & Granite, you’re more than just a client, you’re part of the family!
George Gouletsas - Co-Owner / Commercial Sales
Raised in Greece, George Gouletsas brings a strong work ethic, fresh perspective, and genuine passion for the industry to Cosmos Marble & Granite. As part of the next generation of leadership, George quickly learned the ins and outs of the stone fabrication business, developing a deep understanding of the craftsmanship, precision, and dedication required to deliver exceptional results.
As co-owner alongside his wife and sister-in-law, George takes pride in helping carry the family business forward. His hands-on aproach, willingnes to learn, and commitment to quality have made him an inegral part of the company’s continued growth and success.
Outside of work, George is a devoted husband and proud father of two children, who are at the heart of everything he does. Family plays an important role in his life, and he brings those same values of loyalty, dedication, and
