Generally speaking, it is counted as jewelry and precious stones (renewable precious stones, animal and plant precious stones).
However, there are also pearl powder as the raw material of beauty products, which is classified as raw material.
Pearl shell can be regarded as seafood and edible, but that pearl is not.
These departments have to ask the industrial and commercial departments in industrial and commercial registration. Just take a closer look. Many products are not properly classified. Some can be described as bizarre, and I don't blame them. It is estimated that experts and enterprises from all walks of life have not been invited to participate in the formulation.
The same problem, corals, shells, various minerals dug from the seabed, turtle shells, raw materials for bone products, etc. Is it seafood?
The above is my opinion, I hope I can help you. If it helps, please choose my best answer, and I will continue to answer your follow-up questions.