These are packs of 100 undrilled purple ringtop cowry shells. The shells are approximately 0.5" to 0.75" long.
When ringtop cowry shells are treated with acid, the yellow is removed and the purple color underneath is revealed.
You will not receive the exact shells from the photos but ones similar. There is quite a bit of variety in the shells as you can see from the photos.
They can be used for a variety of crafts and jewelry.
A USFWS export permit is required for all shipments outside the USA.