This is a listing for 925 Sterling Silver Baby Octopus Ring 

Available in 5 sizes.

5(US) = J½ (UK) = 15.58mm

6(US) = L½ (UK) = 16.39mm

7(US) = N½ (UK) = 17.19mm

8(US) = P½ (UK) = 18.00mm

9(US) = R½ (UK) = 18.80mm