I’m guessing if you search in the content browser for “SiliconHarvestComponet” it will probably be referenced by the foliage/resourceObject that it is attached too.
Search for SiliconHarvestComponet
Right-click and choose “Reference Viewer” (should be near the bottom of the menu that pops up)
Identify the object that is using it (most likely you are looking on the left side. Since the right side will probably just have the PrimalItemResource_Silicon)
EDIT:
I just got the most generic items I could find, wasn’t sure what you were asking other than where the pearls were at, and they are known as silicon.