Originally Posted by A.alnakkas
As adviced by Gav
Rhino for sure outer layer has that orange peel look.
The lack of translucency does not mean its not rhino. It depends on how the piece was cut. I have an old Yemeni jambiya and the horn is dark brown the real test is get a high power flashlight and put up against the hilt it should give off a nice glow. The other way to tell is with a magnifier glass look down at the end of the hilt if you see tight fibrous bundles similar to looking down at a handful of thin spaghetti than it's rhino