With more and more companies producing colorless diamonds, synthetic diamond manufacturers hope their industry is entering a new phase.Since 1993, the industry has heard periodic announcements about synthetic diamonds coming to the market and rocking the business to its core. But two decades later, precious few of those predictions have come to fruition.Now, however, yet another announcement about the coming wave of synthetics suggests this time may be different.In November 2010, the Gemesis Diamond Co. announced it was planning to sell lab-grown colorless diamonds, produced by the chemical vapor deposition (CVD) method, over the Internet. As has been the pattern, launching the product took longer than expected. In February the company finally went online at Gemesis.com, offering both yellow and colorless lab-grown gems for sale to the public.And while Gemesis throwing open its doors is