Interchangeable jewelry base

FIG. 1 is a top, left front perspective view of our new design for an interchangeable jewelry base;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a rear elevational view thereof.

The broken lines are included for the purpose of showing environmental portions of the interchangeable jewelry key and form no part of the claimed design.