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Diamant was a series of French three-stage launch vehicles developed by CNES from a family of sounding rockets and flown from 1965 to 1975. The first stage was liquid-fueled; the upper two stages used solid propellant. Diamant A reached orbit at the first attempt in November 1965 carrying the Asterix satellite. Diamant B, with its lengthened first stage and, in the case of the later B4 variant, a modified second stage, launched nine times . All Diamant B launches were from the Guiana Space Centre.