Kerryn — With those measurements your vase is a Sowerby 2505
Iris Posy vase. Are you certain that you were measuring in centimetres and not in inches? Any chance that you could get your measurements checked, say by your local hardware shop? Alternatively could you photograph it with something we all know for scale, such as a can of Baked Beans or a £5 note? The reason is that I can't find a flower block that looks like yours when placed on top of my blue 2505
Iris Posy.
Unfortunately I don't have the matching spare flower holder in that small size (if it is that size). The nearest I can get is a frosted example, but it does have a nasty chip, but it would work OK.
Bernard C.
