Ebony is quite expensive and also quite heavy, which is why it isn't used all that much.
That said, there are a few blades around with ebony plies:
Andro Gauzy SL OFF
Stiga Ebenholz NCT (V and VII)
Stiga Emerald VPS V
Sunflex Zen OFF
Sanwei H5
XIOM used to make one as well (Omega Tour, I think?)...