I have no idea if these are stabilized or not. Best I can tell is that they are not, but what do I know.... Maybe Derrick, or someone in the know at KSF, can chime in? On a side note, a machinist friend of mine was making some 1911 gun grips out of giraffe bone. I asked him why giraffe, and he said it's much harder than cow bone, more durable, and takes fine detail better. He said it had to do with the massive amount of stress put on the long legs of the animal, and that is made the bone much tougher. No idea if that's true, but it sounded plausible.