Dimensions of Center Diamond (mm):
26.00 x 24.52 x 17.55mm
Ya I think that's just the center peice of the diamond. not the whole thing..
If the hope diamond is this big... and its 45.5 Carats... this thing is almost twice as big.. so it has to be bigger than 2 cm.
(bad pic but its the only one I could find of someone holding it)