This sterling silver ring has a small secret compartment. It closes with a latch and is perfect for pill or other tiny things. A poison ring or pillbox ring is a type of ring with a container under the bezel or inside the bezel it self that could be used to hold poison or another substance. Ring like this have been used throughout history to carry perfume lock of hair, devotional relics, messages and other keepsakes so they have also been known by other names.