About Us

For more than 50 years and two generations, John Marmo Diamonds has provided exceptional diamonds, engagement rings and fine jewelry at outstanding savings and value to customers from coast to coast.

Our business is built on high customer satisfaction. Customer referrals and recommendations have allowed us to maintain continuous growth for more than five decades.

John Marmo Diamonds is your jewelry expert with experience in every aspect of the diamond industry. We have proudly owned and operated an alluvial diamond mine in Venezuela-- cutting, polishing, and manufacturing rough diamonds-- in addition to creating jewelry for both the wholesale and retail level.

We are happy to provide an unparalleled shopping experience with an attention to detail and industry expertise to satisfy each customer’s personal style, budget, and needs.