Ancient Greek monumental sculpture was composed almost entirely of marble or bronze; with cast bronze becoming the favoured medium for major works by the early 5th century. Both marble and bronze are fortunately easy to form and very durable. Chryselephantine sculptures, used for temple cult images and luxury works, used gold, most often in leaf form and ivory for all or parts (faces and hands) of the figure, and probably gems and other materials, but were much less common, and only fragments have survived.