Bone, 100%
			 
			 
			
		
		
		
			
			The striations, small parallel lines visible all over the hilt, are the "scars" of the blood vessels when the bone was alive, part of a living creature. 
In my opinion, this is the most important and reliable criterion to classify this material as bone.
		 
		
		
		
		
		
		
		
	 |