John Marmo Diamonds – By Appointment Only

John Marmo Diamonds - By Appointment Only is a Jewelry Store in Charleston, SC. The business offers an extensive selection of naturally sourced diamonds and fine jewelry, including engagement rings, wedding rings, anniversary rings, bracelets, and necklaces. With more than 50 years of experience spanning two generations, the store serves customers seeking custom jewelry design, loose diamonds, and estate buying services. The Charleston location operates by appointment only and garners five-star reviews from customers.

The business is built on high customer satisfaction, with referrals and recommendations fueling continuous growth for more than five decades. John Marmo Diamonds provides expertise in every aspect of the diamond industry, including owning and operating an alluvial diamond mine in Venezuela. This background allows the store to specialize in cutting, polishing, and manufacturing rough diamonds for both wholesale and retail levels. John personally selects all center diamonds and carefully oversees the manufacture of each engagement ring or piece of fine jewelry. He evaluates all side diamonds and precious gems to ensure the highest standards of quality.

The store specializes in GIA Certified Diamonds, offering Triple Excellent Cuts for Round Brilliants and high-quality cuts for Fancy Shape Diamonds. John’s attention to detail and expert knowledge are well respected in the diamond community. The business uses the latest computer-assisted 3-D design techniques for custom jewelry, working with customers throughout the process to ensure a comfortable experience. They also provide professional jewelry repair, including recutting broken or chipped diamonds, and offer competitive market offers for customers looking to sell unwanted diamonds and jewelry.

John Marmo Diamonds - By Appointment Only leverages its deep industry expertise and direct control over diamond sourcing to provide exceptional value and quality to Charleston customers.

BizScoreAI gave the business a Content Quality score of 100 out of 100. This means the website clearly describes its pages and answers customer questions so AI assistants can quote the content directly. The business also received a Performance score of 77 out of 100. This high loading speed keeps visitors on the page and helps the site rank in search results.