Diamond Midstream EnergyLogo Design Contest Logo Design Contest Contests / Diamond Midstream Energy Diamond Midstream Energy has selected their winning logo design. For $350 they received 156 designs from 36 different designers from around the world. Find out how LogoTournament works How LogoTournament works Contest Entries by hardih Return to Contest Return to Contest Withdrawn Prefers others. #93 Withdrawn Prefers others. #92 Withdrawn Prefers others. #42 Withdrawn Prefers others. #41 Withdrawn Prefers others. #24 Withdrawn Prefers others. #23 Discussion No comments yet.