Sterling Silver Celtic Poison Ring

Solid Sterling silver ring has celtic knotwork on the side and on the top. Top opens to reveal a tiny compartment. What you keep in there is no business of mine!

Don't Know your ring size? Try this trick. Wrap a thin strip of paper or a non stretchy piece of string around your finger. Make sure the paper is below the joint of your finger and close to your knuckle.
Mark the spot where the paper meets and measure the distance with your ruler.
Use the below chart to determine your ring size. REMEMBER- it's WAY easier to make a ring smaller than it is to make it bigger!! 
 
Size 4: 1 13/16 inches
Size 5: 1 15/16 inches
Size 6: 2 1/16 inches
Size 7: 2 1/8 inches
Size 8: 2 1/4 inches
Size 9: 2 5/16 inches
Size 10: 2 7/16 inches
Size 11: 2 9/16 inches
Size 12: 2 5/8 inches
Size 13: 2 3/4 inches
Size 14: 2 7/8 inches