From Left to Right --

Billiards Medal is 1.25 inches long and hangs on 19.5 inches of hand-knotted hand made Ethiopian brass beads.

Diving Medal is 1 inch across and hangs on 19 inches of hand-knotted gray agate and copper beads.

Tennis Medal is 1.25 inches across and hangs on 36 inches of hand-knotted copper beads (no clasp, loop this one over your head).