diff --git a/graphics/items/icon_palettes/metal_alloy.pal b/graphics/items/icon_palettes/metal_alloy.pal
new file mode 100644
index 0000000000..8375639923
--- /dev/null
+++ b/graphics/items/icon_palettes/metal_alloy.pal
@@ -0,0 +1,18 @@
+JASC-PAL
+0100
+15
+0 0 0
+249 253 255
+224 232 243
+169 163 177
+136 130 156
+178 194 220
+123 146 180
+162 164 202
+153 208 247
+85 96 152
+136 150 213
+186 212 247
+90 118 181
+154 195 255
+49 49 49
diff --git a/graphics/items/icons/metal_alloy.png b/graphics/items/icons/metal_alloy.png
new file mode 100644
index 0000000000..408e13dd5b
Binary files /dev/null and b/graphics/items/icons/metal_alloy.png differ
diff --git a/include/constants/items.h b/include/constants/items.h
index dbe8c9acd2..0be82dcb5f 100644
--- a/include/constants/items.h
+++ b/include/constants/items.h
@@ -986,8 +986,8 @@
 #define ITEM_SWIFT_MOCHI 811
 #define ITEM_FRESH_START_MOCHI 812
 #define ITEM_GLIMMERING_CHARM 813
-#define ITEM_814 814 // TWV0YWwgQWxsb3k=
-#define ITEM_815 815 // U3RlbGxhciBUZXJhIFNoYXJk
+#define ITEM_METAL_ALLOY 814
+#define ITEM_STELLAR_TERA_SHARD 815
 
 #define ITEMS_COUNT 816
 #define ITEM_FIELD_ARROW ITEMS_COUNT
diff --git a/include/graphics.h b/include/graphics.h
index 9d7258e32d..d8248575f8 100644
--- a/include/graphics.h
+++ b/include/graphics.h
@@ -785,6 +785,8 @@ extern const u32 gItemIcon_UnremarkableTeacup[];
 extern const u32 gItemIconPalette_UnremarkableTeacup[];
 extern const u32 gItemIcon_MasterpieceTeacup[];
 extern const u32 gItemIconPalette_MasterpieceTeacup[];
+extern const u32 gItemIcon_MetalAlloy[];
+extern const u32 gItemIconPalette_MetalAlloy[];
 // Nectars
 extern const u32 gItemIcon_RedNectar[];
 extern const u32 gItemIconPalette_RedNectar[];
diff --git a/src/data/graphics/items.h b/src/data/graphics/items.h
index f273b6d3b0..0a41ce6279 100644
--- a/src/data/graphics/items.h
+++ b/src/data/graphics/items.h
@@ -663,6 +663,9 @@ const u32 gItemIconPalette_UnremarkableTeacup[] = INCBIN_U32("graphics/items/ico
 const u32 gItemIcon_MasterpieceTeacup[] = INCBIN_U32("graphics/items/icons/masterpiece_teacup.4bpp.lz");
 const u32 gItemIconPalette_MasterpieceTeacup[] = INCBIN_U32("graphics/items/icon_palettes/masterpiece_teacup.gbapal.lz");
 
+const u32 gItemIcon_MetalAlloy[] = INCBIN_U32("graphics/items/icons/metal_alloy.4bpp.lz");
+const u32 gItemIconPalette_MetalAlloy[] = INCBIN_U32("graphics/items/icon_palettes/metal_alloy.gbapal.lz");
+
 // Nectars
 
 const u32 gItemIcon_RedNectar[] = INCBIN_U32("graphics/items/icons/red_nectar.4bpp.lz");
diff --git a/src/data/item_icon_table.h b/src/data/item_icon_table.h
index 33ed4aed8d..e048cf8d4e 100644
--- a/src/data/item_icon_table.h
+++ b/src/data/item_icon_table.h
@@ -859,6 +859,8 @@ const u32 *const gItemIconTable[ITEMS_COUNT + 1][2] =
     [ITEM_SWIFT_MOCHI] =  {gItemIcon_Mochi, gItemIconPalette_SwiftMochi},
     [ITEM_FRESH_START_MOCHI] =  {gItemIcon_Mochi, gItemIconPalette_FreshStartMochi},
     [ITEM_GLIMMERING_CHARM] = {gItemIcon_GlimmeringCharm, gItemIconPalette_GlimmeringCharm},
+    [ITEM_METAL_ALLOY] =  {gItemIcon_MetalAlloy, gItemIconPalette_MetalAlloy},
+    [ITEM_STELLAR_TERA_SHARD] = {gItemIcon_QuestionMark, gItemIconPalette_QuestionMark}, //{gItemIcon_TeraShard, gItemIconPalette_StellarTeraShard},
     // Return to field arrow
     [ITEMS_COUNT] = {gItemIcon_ReturnToFieldArrow, gItemIconPalette_ReturnToFieldArrow},
 };
diff --git a/src/data/items.h b/src/data/items.h
index 6646ab98c6..cc8c646223 100644
--- a/src/data/items.h
+++ b/src/data/items.h
@@ -11377,4 +11377,26 @@ const struct Item gItems[] =
         .type = ITEM_USE_BAG_MENU,
         .fieldUseFunc = ItemUseOutOfBattle_CannotUse,
     },
+
+    [ITEM_METAL_ALLOY] =
+    {
+        .name = _("Metal Alloy"),
+        .price = 6000,
+        .description = COMPOUND_STRING("A peculiar metal\n"
+                                       "that makes certain\n"
+                                       "Pokémon evolve."),
+        .pocket = POCKET_ITEMS,
+        .type = ITEM_USE_PARTY_MENU,
+        .fieldUseFunc = ItemUseOutOfBattle_EvolutionStone,
+    },
+
+    [ITEM_STELLAR_TERA_SHARD] =
+    {
+        .name = _("StllrTeraShrd"),
+        .price = 0,
+        .description = sTeraShardDesc,
+        .pocket = POCKET_ITEMS,
+        .type = ITEM_USE_BAG_MENU,
+        .fieldUseFunc = ItemUseOutOfBattle_CannotUse,
+    },
 };