Centrally set with 0.20ct diamond,
decorated in black enamel 
Bearing hallmarks: 
Maker’s mark - T.E.
Crown (for gold)
18 (fineness)
Leopard’s head (London Assay Office)
Letter date - t (c1884)
 
Bearing letters: In Memory Of (on outside of shank)
& inscription (on inside):   
T.R. 
Dec 3rd 
1884
  
Total item’s weight: 4.5gr.