Adds icon_states to the unused and used Eldritch whetstones.

code/game/gamemodes/cult/cult_items.dm

@@ -161,11 +161,16 @@
 /obj/item/weapon/sharpener/cult
 	name = "eldritch whetstone"
 	desc = "A block, empowered by dark magic. Sharp weapons will be enhanced when used on the stone."
+	icon_state = "cult_sharpener"
 	used = 0
 	increment = 5
 	max = 40
 	prefix = "darkened"
 
+/obj/item/weapon/sharpener/cult/update_icon()
+	if(used)
+		icon_state = "cult_sharpener_used"
+
 /obj/item/clothing/suit/hooded/cultrobes/cult_shield
 	name = "empowered cultist armor"
 	desc = "Empowered garb which creates a powerful shield around the user."
@@ -391,7 +396,7 @@
 	if(!iscultist(user))
 		to_chat(user, "That doesn't seem to do anything useful.")
 		return
-		
+
 	if(istype(A, /obj/item))
 
 		var/list/cultists = list()

code/game/objects/items/weapons/sharpener.dm

@@ -46,6 +46,7 @@
 	name = "worn out [name]"
 	desc = "[desc] At least, it used to."
 	used = 1
+	update_icon()
 
 /obj/item/weapon/sharpener/super
 	name = "super whetstone"