diff --git a/src/main/java/ru/betterend/item/EternalCrystal.java b/src/main/java/ru/betterend/item/EternalCrystal.java
new file mode 100644
index 00000000..c85ab01a
--- /dev/null
+++ b/src/main/java/ru/betterend/item/EternalCrystal.java
@@ -0,0 +1,30 @@
+package ru.betterend.item;
+
+import net.minecraft.block.BlockState;
+import net.minecraft.item.Item;
+import net.minecraft.item.ItemUsageContext;
+import net.minecraft.server.world.ServerWorld;
+import net.minecraft.util.ActionResult;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+
+import ru.betterend.blocks.RunedFlavolite;
+import ru.betterend.registry.ItemRegistry;
+import ru.betterend.util.PortalFrameHelper;
+
+public class EternalCrystal extends Item {
+
+	public EternalCrystal() {
+		super(ItemRegistry.makeSettings());
+	}
+	
+	public ActionResult useOnBlock(ItemUsageContext context) {
+		World world = context.getWorld();
+		BlockPos usedPos = context.getBlockPos();
+		BlockState usedBlock = world.getBlockState(usedPos);
+		if (world instanceof ServerWorld && (usedBlock.getBlock() instanceof RunedFlavolite) && !usedBlock.get(RunedFlavolite.ACTIVATED)) {
+			PortalFrameHelper.checkPortalFrame((ServerWorld) world, usedPos, usedBlock.getBlock());
+		}
+		return ActionResult.PASS;
+	}
+}
diff --git a/src/main/java/ru/betterend/registry/ItemRegistry.java b/src/main/java/ru/betterend/registry/ItemRegistry.java
index 62f35c13..61ebd644 100644
--- a/src/main/java/ru/betterend/registry/ItemRegistry.java
+++ b/src/main/java/ru/betterend/registry/ItemRegistry.java
@@ -32,6 +32,7 @@ import ru.betterend.item.EndHammer;
 import ru.betterend.item.EndHoe;
 import ru.betterend.item.EndPickaxe;
 import ru.betterend.item.EndToolMaterial;
+import ru.betterend.item.EternalCrystal;
 import ru.betterend.tab.CreativeTab;
 import ru.betterend.util.TagHelper;
 
@@ -75,6 +76,9 @@ public class ItemRegistry {
 	public static final ToolItem DIAMOND_HAMMER = registerTool("diamond_hammer", new EndHammer(ToolMaterials.DIAMOND, 5.5F, -3.1F, 0.2D, makeSettings()));
 	public static final ToolItem NETHERITE_HAMMER = registerTool("netherite_hammer", new EndHammer(ToolMaterials.NETHERITE, 5.0F, -3.0F, 0.2D, makeSettings()));
 	
+	// Other //
+	public static final Item ETERNAL_CRYSTAL = registerItem("eternal_crystal", new EternalCrystal());
+	
 	protected static Item registerItem(String name, Item item) {
 		if (item != Items.AIR) {
 			Registry.register(Registry.ITEM, BetterEnd.makeID(name), item);
@@ -122,7 +126,7 @@ public class ItemRegistry {
 		return registerItem(name, item);
 	}
 
-	private static Settings makeSettings() {
+	public static Settings makeSettings() {
 		return new Item.Settings().group(CreativeTab.END_TAB);
 	}
 
diff --git a/src/main/java/ru/betterend/util/PortalFrameHelper.java b/src/main/java/ru/betterend/util/PortalFrameHelper.java
index a42a0f98..79c0401f 100644
--- a/src/main/java/ru/betterend/util/PortalFrameHelper.java
+++ b/src/main/java/ru/betterend/util/PortalFrameHelper.java
@@ -8,17 +8,18 @@ import net.minecraft.server.world.ServerWorld;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Direction;
 import net.minecraft.world.World;
-
+import ru.betterend.registry.BlockRegistry;
 import ru.betterend.registry.FeatureRegistry;
 
 public class PortalFrameHelper {
 	
-	public static boolean checkPortalFrame(World world, BlockPos pos, Block frameBlock) {
+	public static boolean checkPortalFrame(ServerWorld world, BlockPos pos, Block frameBlock) {
 		if (world == null || pos == null) return false;
 		if (!world.getBlockState(pos).isOf(frameBlock)) return false;
 		BlockPos bottomCorner = findBottomCorner(world, pos, frameBlock);
 		if (bottomCorner == null) return false;
 		boolean valid = true;
+		Direction.Axis axis = Direction.Axis.X;
 		BlockPos checkPos = bottomCorner.up();
 		Direction moveDir = Direction.UP;
 		while(!checkPos.equals(bottomCorner)) {
@@ -27,11 +28,13 @@ public class PortalFrameHelper {
 				if (!valid) {
 					switch(moveDir) {
 						case UP: {
+							checkPos = checkPos.down();
 							if (world.getBlockState(checkPos.east()).isOf(frameBlock)) {
 								checkPos = checkPos.east();
 								moveDir = Direction.EAST;
 								valid = true;
 							} else if (world.getBlockState(checkPos.north()).isOf(frameBlock)) {
+								axis = Direction.Axis.Z;
 								checkPos = checkPos.north();
 								moveDir = Direction.NORTH;
 								valid = true;
@@ -39,6 +42,7 @@ public class PortalFrameHelper {
 							break;
 						}
 						case DOWN: {
+							checkPos = checkPos.up();
 							if (world.getBlockState(checkPos.west()).isOf(frameBlock)) {
 								checkPos = checkPos.west();
 								moveDir = Direction.WEST;
@@ -52,6 +56,7 @@ public class PortalFrameHelper {
 						}
 						case NORTH:
 						case EAST: {
+							checkPos = moveDir.equals(Direction.NORTH) ? checkPos.south() : checkPos.west();
 							if (world.getBlockState(checkPos.down()).isOf(frameBlock)) {
 								checkPos = checkPos.down();
 								moveDir = Direction.DOWN;
@@ -93,6 +98,13 @@ public class PortalFrameHelper {
 				}
 			}
 		}
+		if (valid) {
+			if (world.getBlockState(bottomCorner).isOf(BlockRegistry.FLAVOLITE_RUNED)) {
+				generatePortalFrame(world, bottomCorner, axis, true);
+			} else {
+				generateEternalPortalFrame(world, bottomCorner, axis, true);
+			}
+		}
 		return valid;
 	}
 	
diff --git a/src/main/resources/assets/betterend/models/item/eternal_crystal.json b/src/main/resources/assets/betterend/models/item/eternal_crystal.json
new file mode 100644
index 00000000..16830ca2
--- /dev/null
+++ b/src/main/resources/assets/betterend/models/item/eternal_crystal.json
@@ -0,0 +1,6 @@
+{
+	"parent": "item/generated",
+	"textures": {
+		"layer0": "betterend:item/crystal_shards"
+	}
+}
\ No newline at end of file