D.NEA, which began by selling its lab-grown diamonds online, has jumped into the brick-and-mortar business by setting up a boutique in Greenville, S.C. CEO Eric Franklin says Greenville is the only retail location D.NEA is interested in. "We decided to open the retail space because we have a lot of customers that want to see the diamonds in person. It's more for appointments than for walk-in traffic." Another company in the lab-grown business, Scio, is also based in Greenville, but Franklin says that's just "an odd coincidence." D.NEA, which uses high-pressure, high-temperature (HPHT) production presses in Europe, produces mostly blue and yellow diamonds, but can manufacture up to 0.75 ct. colorless stones. Franklin says D.NEA hopes to make 1 ct. colorless stones in the near future, but can't be specific about dates. He does, however, claim that D.NEA is "currently the biggest prod