Lance head ?? Indo Persian? Seller stated African

[katana]

Hi
bought what I believe to be a lance head. The seller thought African, if it is, I have never seen anything like it. Although I have seen facetted sockets on a few African spears , I have never seen one with a very thick, diamond section blade. I think India is more likely, skillfully hand forged with forged 'fullering' ......seems to be designed for 'armour piercing'. The head is 'too good' to 'throw', so perhaps a hand held stabbing spear. It has good patination and would not be surprised if this is 18th C.
The reddish stripe (socket) is not clearly visible to the naked eye . I only noticed it on the photo's

Has anyone any ideas or comments please, thank you

Regards David

.