These are referred to as Red Nerites. However, you will notice, they are more of an orange-brown instead of a true red. At any rate, they are pretty, colorful and natural, (not dyed) shells.
The extra tiny ones are sorted through a 5/32" screen. The tiny ones are sorted through a 7/32" screen.
There are 30 perfect mini shells in each package.
These tiny shells are getting very hard to find.
I have washed and sorted these out to give you only good shells.