This is really great news! But we can go even further, let's continue with banning Rhino horn markets (would we call it keratin markets rather than ivory?). Keratin would be primary component here, the same protein that makes human fingernails also is what composes Rhino horns.

http://www.latimes.com/world/africa/la-fg-vietnam-rhino-traf...

In Vietnam and some of China there are some who cling to a belief that eating the Rhino horn will cure/prevent cancer or increase libido. Those who believe this probably aren't aware that eating their fingernails would have the same effect.