At The Gem Lab, we specialize in creating stunning custom engagement and bridal rings tailored to your unique love story. Our diamond experts and skilled designers will guide you through every step of the process in a stress-free environment. Experience unparalleled craftsmanship and meticulous attention to detail, ensuring your ring is not only a symbol of your love but a cherished piece for years to come. Discover the perfect ring that reflects your style and commitment today!

Discover a world of brilliance with The Gem Lab’s exclusive collection of loose gemstones. Browse a curated selection of thousands of vibrant gems sourced from across the globe, each one handpicked for its unparalleled beauty and quality. Find the perfect gem that speaks to you, and let us bring your vision to life.

Joseph A. Cassarino didn’t just dream of being a jeweler. He prepared himself to be an exceptional jeweler. A graduate of the Gemological Association of Great Britain, he opened his first jewelry shop, The Gem Lab, in 1958, armed with a prestigious gemological degree and a sterling reputation. Located in the Sibley Tower Building in downtown Rochester, New York, the original Gem Lab occupied one small room where Joe set up shop as the “jeweler’s jeweler” offering a variety of technical services, including gem identification, jewelry repair and fabrication.