The FFA Diamant (English: Diamond) is a family of Swiss high-wing, T-tailed, single-seat, FAI Standard Class and FAI Open Class gliders that was designed by engineering students under supervision of Professor Rauscher at the ETH Zurich and manufactured by Flug- und Fahrzeugwerke Altenrhein AG (FFA) of Altenrhein, Switzerland. The Diamant is noted as the first glider that was built entirely from fiberglass, with no other materials, such as balsa, used as a sandwich.