A nice piece - this is a glass 'crystal ball' (i.e. made form glass, not crystal) in its original case which from the style of it looks to be c. 1900 in date.
A nice assortment of cake knives with chased silver plated blades. One has a sterling silver ferrule fully hallmarked for Sheffield 1900. Longest is 26.7cm, shortest is 24.3cm.