diff --git a/kubejs/data/minecraft/tags/items/trim_materials.json b/kubejs/data/minecraft/tags/items/trim_materials.json
new file mode 100644
index 000000000..92c745e4b
--- /dev/null
+++ b/kubejs/data/minecraft/tags/items/trim_materials.json
@@ -0,0 +1,18 @@
+{
+  "values": [
+    "minecraft:amethyst_shard",
+    "gtceu:bismuth_ingot",
+    "minecraft:diamond",
+    "minecraft:emerald",
+    "minecraft:gold_ingot",
+    "minecraft:lapis_lazuli",
+    "gtceu:opal_gem",
+    "gtceu:raw_pyrite",
+    "gtceu:rose_gold_ingot",
+    "gtceu:ruby_gem",
+    "gtceu:sapphire_gem",
+    "gtceu:silver_ingot",
+    "gtceu:sterling_silver_ingot",
+    "gtceu:topaz_gem"
+  ]
+}
diff --git a/kubejs/data/minecraft/trim_material/amethyst.json b/kubejs/data/minecraft/trim_material/amethyst.json
new file mode 100644
index 000000000..1577d4d53
--- /dev/null
+++ b/kubejs/data/minecraft/trim_material/amethyst.json
@@ -0,0 +1,9 @@
+{
+  "asset_name": "amethyst",
+  "description": {
+    "translate": "trim_material.minecraft.amethyst",
+    "color": "#9A5CC6"
+  },
+  "ingredient": "tfc:gem/amethyst",
+  "item_model_index": 1
+}
diff --git a/kubejs/data/minecraft/trim_material/diamond.json b/kubejs/data/minecraft/trim_material/diamond.json
new file mode 100644
index 000000000..4ed98f565
--- /dev/null
+++ b/kubejs/data/minecraft/trim_material/diamond.json
@@ -0,0 +1,12 @@
+{
+  "asset_name": "diamond",
+  "description": {
+    "color": "#6EECD2",
+    "translate": "trim_material.minecraft.diamond"
+  },
+  "ingredient": "tfc:gem/diamond",
+  "item_model_index": 0.8,
+  "override_armor_materials": {
+    "diamond": "diamond_darker"
+  }
+}
\ No newline at end of file
diff --git a/kubejs/data/minecraft/trim_material/emerald.json b/kubejs/data/minecraft/trim_material/emerald.json
new file mode 100644
index 000000000..c3b4ef25b
--- /dev/null
+++ b/kubejs/data/minecraft/trim_material/emerald.json
@@ -0,0 +1,9 @@
+{
+  "asset_name": "emerald",
+  "description": {
+    "color": "#11A036",
+    "translate": "trim_material.minecraft.emerald"
+  },
+  "ingredient": "tfc:gem/emerald",
+  "item_model_index": 0.7
+}
\ No newline at end of file
diff --git a/kubejs/data/minecraft/trim_material/gold.json b/kubejs/data/minecraft/trim_material/gold.json
new file mode 100644
index 000000000..001066b92
--- /dev/null
+++ b/kubejs/data/minecraft/trim_material/gold.json
@@ -0,0 +1,12 @@
+{
+  "asset_name": "gold",
+  "description": {
+    "color": "#DEB12D",
+    "translate": "trim_material.minecraft.gold"
+  },
+  "ingredient": "tfc:gem/diamond",
+  "item_model_index": 0.6,
+  "override_armor_materials": {
+    "gold": "gold_darker"
+  }
+}
\ No newline at end of file
diff --git a/kubejs/data/minecraft/trim_material/lapis.json b/kubejs/data/minecraft/trim_material/lapis.json
new file mode 100644
index 000000000..cf00d9059
--- /dev/null
+++ b/kubejs/data/minecraft/trim_material/lapis.json
@@ -0,0 +1,9 @@
+{
+  "asset_name": "lapis",
+  "description": {
+    "color": "#416E97",
+    "translate": "trim_material.minecraft.lapis"
+  },
+  "ingredient": "tfc:gem/lapis_lazuli",
+  "item_model_index": 0.9
+}
\ No newline at end of file