About Our Store
Our History
Diamond Exchange first opened its doors in 1982 at the Allandale Marketplace on West Stone Drive in Kingsport, TN with owners, Kimber and Dorothy Frederick. A second location was opened in 1991 at 1757 Fort Henry Drive. In October of 2002, Diamond Exchange moved its Allandale store to the Jennings Farm Shopping Center on West Stone Drive. In October 2006, the Fort Henry Drive location of Diamond Exchange moved into a newly renovated building at 1901 Fort Henry Drive. The City of Kingsport honored Diamond Exchange in 2007 with its Beautification Award for this new store. Most recently, in July 2012, we consolidated our stores at the spacious 1901 Fort Henry Drive location. More than once, Diamond Exchange has been voted “Best Jeweler” in the Kingsport Times-News Readers Choice Awards by its customers. Diamond Exchange strives to provide friendly, professional service in addition to carrying a wide selection of diamond and karat gold jewelry. Varying price ranges are offered to meet different customer needs. In April 2020 while closed due to Covid 19, Billy Mowell lead the beginning of a new ecommerce store, jewelrywithelegance.com, giving Diamond Exchange’s customers and new customers an avenue to continue to shop with Diamond Exchange. In early 2021, we announced that J. Billy Mowell Jr. would be taking the lead of Diamond Exchange as Kimber and Dorothy Frederick would be retiring to spend more time enjoying their growing grandchildren in California.
J. Billy Mowell Jr.
J. Billy Mowell Jr. has been with Diamond Exchange since 1992. He is a graduate of East Tennessee State University College of Business. Billy has been Diamond Exchange’s General Manager from 1995 to 2021 and is an experienced jeweler. He is certified in Diamonds and Diamond Grading by the Gemological Institute of America (GIA). He also has certificates from GIA in Diamond Essentials, Jewelry Essentials, Gemstone Essentials, resulting in him earning an APPLIED JEWELRY PROFESSIONAL diploma. “Come in and see me for professional, knowledgeable service.”
Billy is native to the Kingsport area. He is married to Martha Mowell and they are blessed with four beautiful children (twelve-year-old triplets and a beautiful sixteen-year-old daughter).

Our Team
Our Team is blessed to be a very knowledgeable group that loves diamonds and jewelry. Several of our team members are educated by the Gemological Institute of America in Diamonds and Diamond Grading. The Diamond Exchange team has combined experience of nearly 200 years to serve you, our customer, with confidence.
Why Choose Us
Experience
Diamond Exchange has been in business since 1982. Our staff are trained and ready to serve you with confidence. Several of our staff are GIA certified in diamonds and diamond grading. Trust our experienced team to offer helpful advice and assistance to find the perfect item.
Quality Products
Diamond Exchange carries a wide selection of diamond and other fine jewelry and watches from some of the most popular and trusted national brands. We offer quality merchandise in varied price ranges to meet the needs of our customers.
Service
Diamond Exchange features on-site jewelry and watch repair services. Our expert jewelers take great care in your repair. We offer a wide range of services including watch battery replacement, cleaning, bead restringing, engraving, and custom remounts.