Salaam All ~ The use of high density modern composites on hilts.
To save the Rhino, Elephant and other endangered species here are a few alternative Omani Hilts that are very capable, properly weighted and take all the usual silver pin decoration just like horn and bone.
Oddly I have never seen Mamoth tusk used on Omani Khanjars.
Regards,
Ibrahiim al Balooshi.