GGC Diamonds is the premier DC diamond buyer, serving customers all over Washington DC; Bethesda, Maryland; and Arlington, Virginia. GGC Diamonds professionals boast over 80 years of experience and a worldwide network of diamond dealers in locations such as South Africa, Belgium, and Israel that assist in establishing the maximum fair value for individuals seeking to sell Samuelson diamonds, Mervis diamonds, engagement rings, old jewelry, watches, estate pieces, and more. GGC Diamonds also offers on the spot cash payments in their DC location, and parcel service with turnaround in only 24-48 hours.