Ivory item for identification please

[Kmaddock]

Thanks Richard
but no cant be screwed together with the decoration on the outside

I was thinking along the following

the inside is v rough with all the little spikes so if i was sewing a knitted woollen jumper together it would be an ideal clamp for holding together 2 pieces of knitted fabric stopping them from slipping around. But I don't knit and this idea is completely unfounded and without back up

cost me 2 euro and i am sure i will have a use for it sometime but would love to know what it could be

Regards to all and if someone can give me a valid reason as to why they should have it rather than I just let me know