There are 40 shells in each package. These are getting very difficult to find.
The extra tiny ones measure 1/8".
The tiny ones are under 1/4".
For slightly larger ones, check my Tiny-Small Seashell page.
They have been washed and carefully sorted and checked. So you are getting clean usable shells. I always add an extra in case there are any flaws I overlooked.
Think of all the pretty patterns you can make with them.