GemEx Systems is inviting its fans to a drawing competition, being held on the official GemEx page on Facebook, and is offering a prize of a pair of diamond earrings weighing a total of 1-carat, along with a GemEx Light Performance Certification. %% The company has laid out a simple process to enter the competition, by becoming a GemEx Facebook fan. The first 1,000 fans are to be automatically entered into the drawing contest. The company believes the platform of Facebook would enable it to include a wide consumer audience. Information on the contest can be viewed on GemEx.com or Facebook.com/gemex. The company provides certificates measuring diamond brilliance, fire and sparkle.