It is easy to disarm a philosopher’s stone. The stone transmutes elements. Lead can become gold, wood can become steam, bread and wine can become flesh and blood. All it takes is for the stone’s wielder to focus his will upon the subject long enough for the chemical reaction to occur. The stone itself is merely a catalyst: the trigger that initiates chemical change without engaging in, or being changed by, the reaction. It is Maxwell’s Demon, bringing the wielder and the will ever closer whilst remaining aloof, unchanged; providing balance as both sides of the equation continue to eat themselves like chemical ouroboros. To destroy one, it is only necessary to turn its power back upon itself. Complete the loop of chemical change so that it is the stone, not the wielder, that becomes both agent and the reagent. Command the stone to turn itself to shale, to soap, to water, and the monster was destroyed.
The difficulty is never in the act, it is in persuading the stone’s owner that it must be done.