Can the Court Reject Expert Testimony That a Specific Knife Was the Murder Weapon but Admit It As Relevant Evidence ?

In Ramirez v. State, 542 So. 2d 352, 355 (Fla. 1989) the Court, in rejecting expert testimony from a tool mark expert that a specific knife was the murder weapon in that case, indicated that the knife in question could have been admitted based on testimony from the medical examiner that the victim's wounds were consistent with being caused by the knife in question: "The knife itself, however, could have been properly admitted as relevant evidence because it was an instrument which could have caused the victim's wounds, based on the medical examiner's testimony and the other evidence linking this knife to Ramirez.")