Diamond Cross true cross Crux, although the False Cross has always been a worse deceiver than the Diamond Cross, because most of its stars have approximately the same declinations as the stars of Crux. Diamond Cross The Diamond Cross is an asterism in the southern constellation Carina. The Diamond Cross is composed of four bright stars: Beta, Theta, Upsilon and Omega Carinae. These four bright stars create an almost perfect diamond shape, hence the name "Diamond Cross". The entire asterism is visible to all observers south of 20°N latitude. It bears a striking resemblance to Crux (The Southern Cross) and the False
Crux celestial globe and the latter in one of the small celestial maps on his large wall map. Both authors, however, depended on unreliable sources and placed Crux in the wrong position. Crux was first shown in its correct position on the celestial globes of Petrus Plancius and Jodocus Hondius in 1598 and 1600. Its stars were first catalogued separately from Centaurus by Frederick de Houtman in 1603. The constellation was later adopted by Jakob Bartsch in 1624 and Augustin Royer in 1679. Royer is sometimes wrongly cited as initially distinguishing Crux. Crux is bordered by the constellations Centaurus (which surrounds