diff --git a/overrides/scripts/Midgame.zs b/overrides/scripts/Midgame.zs
index da57602..b830927 100644
--- a/overrides/scripts/Midgame.zs
+++ b/overrides/scripts/Midgame.zs
@@ -1,6 +1,11 @@
 import mods.gregtech.recipe.RecipeMap;
 import crafttweaker.item.IItemStack;
 import crafttweaker.item.IIngredient;
+import mods.gregtech.ore.OrePrefix;
+import mods.gregtech.ore.IOreRecipeHandler;
+import mods.gregtech.material.Material;
+import mods.gregtech.recipe.helpers;
+import mods.gregtech.recipe.IRecipeUtils;
 import crafttweaker.data.IData;
 
 recipes.remove(<thermalexpansion:satchel:2>);
@@ -134,3 +139,15 @@ recipes.addShaped(<draconicevolution:info_tablet>, [
 	[<ore:stone>, <ore:stone>, <ore:stone>]
 ]);
 
+// Perfect Gems
+val gemPerfect as OrePrefix = OrePrefix.getPrefix("gemPerfect");
+
+gemPerfect.generateRecipes(function(orePrefix as OrePrefix, material as Material) {
+	val utils as IRecipeUtils = IRecipeUtils.utils;
+
+    <recipemap:cutter>.recipeBuilder()
+        .inputs(utils.item(orePrefix, material))
+        .fluidInputs(<liquid:lubricant> * 100)
+        .outputs(utils.ore("gemExquisite", material))
+        .duration(100).EUt(1920).buildAndRegister();
+} as IOreRecipeHandler);
diff --git a/overrides/scripts/materials.zs b/overrides/scripts/materials.zs
index 39d3192..f588d56 100644
--- a/overrides/scripts/materials.zs
+++ b/overrides/scripts/materials.zs
@@ -1,5 +1,4 @@
 #loader gregtech
-#packmode normal
 
 import mods.gregtech.material.MaterialBuilder;
 import mods.gregtech.material.MaterialRegistry;
@@ -8,10 +7,6 @@ import mods.gregtech.material.Material;
 import mods.gregtech.material.Elements;
 import mods.gregtech.ore.OrePrefix;
 
-val gemPerfect as OrePrefix = OrePrefix.registerOrePrefix("gemPerfect", 8, "gemPerfect", 1);
-gemPerfect.setGenerationPredicate(IMaterialPredicate.hasGem);
-gemPerfect.createMaterialItem();
-
 var element_omnium = Elements.add(130, 234, -1, null, "Omnium", "Nm", false);
 var element_draconium = Elements.add(149, 264, -1, null, "Draconium", "Dc", false);
 var element_draconium_awakened = Elements.add(149, 267, -1, null, "AwakenedDraconium", "Dc*", false);
@@ -402,12 +397,11 @@ var snowchestite = MaterialBuilder(32059, "snowchestite")
     .flags("disable_decomposition")
     .color(0x274c9f).iconSet("shiny")
     .components([<material:naquadah_oxide> * 3, <material:pyromorphite> * 1])
-    .addOreByproducts(<material:chalcopyrite>, <material:vanadium_magnetite>, <material:naquadah>)
+    .addOreByproducts(<material:chalcopyrite>, <material:vanadium_magnetite>, <material:naquadah_hydroxide>)
     .build();
 
 var naquadah_hydroxide = MaterialBuilder(32060, "naquadah_hydroxide")
     .dust()
-    .flags("disable_decomposition")
     .color(0x1941a6).iconSet("dull")
     .components([<material:naquadah> * 1, <material:hydrogen> * 3, <material:oxygen> * 3])
     .build();
@@ -783,7 +777,7 @@ var taranium = MaterialBuilder(32109, "taranium")
 <material:gold>.addFlags(["generate_gear"]);
 <material:lead>.addFlags(["generate_gear"]);
 <material:nickel>.addFlags(["generate_gear"]);
-<material:platinum>.addFlags(["generate_gear", ]);
+<material:platinum>.addFlags(["generate_gear"]);
 <material:silver>.addFlags(["generate_gear"]);
 <material:emerald>.addFlags(["generate_gear"]);
 
diff --git a/overrides/scripts/oreprefix.zs b/overrides/scripts/oreprefix.zs
new file mode 100644
index 0000000..1506665
--- /dev/null
+++ b/overrides/scripts/oreprefix.zs
@@ -0,0 +1,30 @@
+#loader gregtech
+#priority 10
+
+import mods.gregtech.material.MaterialBuilder;
+import mods.gregtech.material.MaterialRegistry;
+import mods.gregtech.material.IMaterialPredicate;
+import mods.gregtech.material.Material;
+import mods.gregtech.material.Elements;
+import mods.gregtech.ore.OrePrefix;
+import mods.gregtech.recipe.helpers;
+import mods.gregtech.ore.IOreRecipeHandler;
+import mods.gregtech.MaterialFlag;
+import mods.gregtech.recipe.RecipeMap;
+import mods.gregtech.MaterialFlagBuilder;
+
+val gemPerfectFlag = MaterialFlagBuilder.create("generate_perfect")
+    .requireGem()
+    .build();
+
+<material:diamond>.addFlags(["generate_perfect"]);
+<material:emerald>.addFlags(["generate_perfect"]);
+<material:ruby>.addFlags(["generate_perfect"]);
+<material:topaz>.addFlags(["generate_perfect"]);
+
+val gemPerfect as OrePrefix = OrePrefix.registerOrePrefix("gemPerfect", 8, "gemPerfect", 1);
+gemPerfect.setGenerationPredicate(function(mat as Material) as bool {
+    return mat.hasFlag(gemPerfectFlag);
+} as IMaterialPredicate);
+
+gemPerfect.createMaterialItem();