Specializing in diamonds, Suncoast Gem Lab is in The Village on Cortez on the second floor, with an outdoor entrance. Owners Donna and Tom Seguin both have graduate degrees in gemology. They offer gold, diamond and gemstone appraisal, and jewelry repair and design. From watches, necklaces and rings to estate jewelry, Suncoast Gem Lab strives to give you honest representation at the best value in the industry.