Voici la réponse de la fille de chez CRK:
" Congratulations on your recent purchase. The Ivory is stabilized and there is very little maintenance required. If the inlay needed it, I would spray a little dusting spray on a clean soft cloth and wipe the inlay only (not the titanium). But Ivory is a beautiful inlay and often will continue to alter as it is used. Lots of holding can make it develop a bit of a shine. In all its state, I think it is our most spectacular inlay. Please let me know if you have any further questions."
Donc le moumoute est stabilisé. Il peut changer de couleur, se patiner.