Rare Bone data.

src/data/items.h

@@ -1602,6 +1602,18 @@ const struct Item gItems[] =
         .secondaryId = 0,
     },
 
+    [ITEM_RARE_BONE] =
+    {
+        .name = _("Rare Bone"),
+        .itemId = ITEM_RARE_BONE,
+        .price = 5000,
+        .description = sRareBoneDesc,
+        .pocket = POCKET_ITEMS,
+        .type = 4,
+        .fieldUseFunc = ItemUseOutOfBattle_CannotUse,
+        .secondaryId = 0,
+    },
+
 // Mail
     [ITEM_ORANGE_MAIL] =
     {

src/data/text/item_descriptions.h

@@ -590,6 +590,11 @@ static const u8 sPurpleNectarDesc[] = _(
     "changes the form\n"
     "of certain POKéMON.");
 
+static const u8 sRareBoneDesc[] = _(
+    "A very rare bone.\n"
+    "It can be sold at\n"
+    "a high price.");
+
 // Mail
 static const u8 sOrangeMailDesc[] = _(
     "A ZIGZAGOON-print\n"