Diamond synthesis under microgravity environment with parabolic flights by DAS and rocket by JAXA was reported. Gaseous species on the reaction chamber were detected and analyzed with OES (optical emission spectroscopy), under terrestrial gravity environment and microgravity environment, and we expected that synthesized diamond particles might have some deferent morphology compare with terrestrial conditions. Unfortunately, this particular launch was not retrieved, so we don't have our diamond samples for confirm SEM and Raman spectra.Key wards: Diamond, Space Utilization, OES(optical emission spectroscopy)
