The ornamental design for a fingerring, as shown and described.
1.-2. Finger ring
1.1 : Perspective
1.2 : Front
1.3 : Back
1.4 : Top
1.5 : Bottom
1.6 : Right
1.7 : Left
2.1 : Perspective
2.2 : Front
2.3 : Back
2.4 : Top
2.5 : Bottom
2.6 : Right
2.7 : Left Design 1: The dot-dash broken lines denote the boundary between the claimed portion and the unclaimed portion, and form no part of the claimed design; the evenly dashed broken lines in the reproductions form no part of the claimed design.