Looking to replace a bowl I broke at a dinner party

by Laurie
(Helena, Montana USA)

I am trying to replace a bowl I broke at a dinner party and know nothing about it. I know the hostess has three others with the same design. I am assuming it is porcelain but don't know that either. I was able to have someone take pictures of a remaining bowl which I have posted. I would appreciate any information so I can find one to replace the one I broke. Thank you.