I've sorted out the very tiny pheasant shells for miniature work.
The shells in the left of the photo are extra tiny ones, sorted through a 3/16" screen. There are 40 per package.
The shells on the right have been sized through a 7/32" screen. Each pack contains 50 shells. I always add one or two extras in case you find one you don't like.
These shells have been washed and hand selected for your artwork.