I read this book a long time ago and the male protagonist ends up having his skull trepanned by Amazonian tribal shaman, who then inserts an emerald into his skull as some kind of cure I think.

Can anyone help me find this book title please?

closed as off-topic by Valorum, The Fallen, Ward, Meat Trademark, Null Nov 7 '15 at 18:22

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This question does not appear to be about science fiction or fantasy within the scope defined in the help center." – The Fallen, Meat Trademark, Null
If this question can be reworded to fit the rules in the help center, please edit the question.

  • 1
    What about this book was science-fiction or fantasy? – Valorum Oct 10 '15 at 16:28