I was wondering, if anyone knows the answer to this question. When submitting the transcripts and diplomas, my university provided my with a certificate in English, stating that I successfully graduated, obtained my degree and completed all my obligations. Does this count as a "diploma" or should I present an actual diploma, which was issued to me at graduation ceremony. The latter is not in English and would have to be translated. Hence, it makes much more sense to me to present the aforementioned certificate in English.
What you have submitted will be enough. The law school does not need to actually see your diploma. For example, many of my client's transcripts just say that they were "awarded the diploma" at the end of their academic transcript. That has always been sufficient.
In the unlikely event that Harvard Law School requires more information, they will contact you and will ask for it. Thus, no need to worry about it.
If you have any other questions, feel free to reach out!