diff --git a/CHANGELOG.md b/CHANGELOG.md
index 260a42a..f46af82 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,9 @@
 
 ## Unreleased
 
-Nothing yet!
+- Fix `GreenTea.string({ unicode = true })` accepting invalid UTF-8. The check called `utf8.graphemes` inside a `pcall` without iterating it, which never validates. It now uses `utf8.len`.
+- Fix `countGraphemes` never returning `nil` for invalid UTF-8, so `GreenTea.string({ graphemes = ... })` reports a proper error instead of throwing.
+- Add `GreenTea.Content`.
 
 ## 0.4.11
 
diff --git a/src/GreenTea.luau b/src/GreenTea.luau
index 695a867..fdb1b1e 100644
--- a/src/GreenTea.luau
+++ b/src/GreenTea.luau
@@ -493,16 +493,8 @@ function Type.type(self: any): ...any
 	return self
 end
 
-local isStringUnicode
-
-if utf8.graphemes then
-	function isStringUnicode(str: string)
-		return pcall(utf8.graphemes, str) == true
-	end
-else
-	function isStringUnicode(str: string)
-		return utf8.len(str) ~= nil
-	end
+local function isStringUnicode(str: string)
+	return utf8.len(str) ~= nil
 end
 
 local function truncate(count: number, str: string)
@@ -928,6 +920,7 @@ GreenTea.Rect = newBasicType("Rect") :: () -> Rect
 GreenTea.Region3 = newBasicType("Region3") :: () -> Region3
 GreenTea.BrickColor = newBasicType("BrickColor") :: () -> BrickColor
 GreenTea.Font = newBasicType("Font") :: () -> Font
+GreenTea.Content = newBasicType("Content") :: () -> Content
 
 GreenTea.Enum = newBasicType("Enum") :: () -> Enum
 GreenTea.EnumItem = newBasicType("EnumItem") :: () -> EnumItem
@@ -1146,6 +1139,8 @@ end
 local function countGraphemes(str: string): number?
 	if #str == 0 then
 		return 0
+	elseif not isStringUnicode(str) then
+		return nil
 	else
 		local count = 0
 		for _ in utf8.graphemes(str) do
@@ -1285,7 +1280,7 @@ end
 --- @function types not listed here
 --- A few methods are not listed in the docs so that they don't clutter with basic types.\
 --- Here's a list: userdata, Vector2, vector, Vector3, CFrame, Color3, UDim, UDim2,
---- Ray, Rect, Region3, BrickColor, Font, Enum, EnumItem.\
+--- Ray, Rect, Region3, BrickColor, Font, Content, Enum, EnumItem.\
 --- For the most part, any Luau type you'd naturally write likely also exists under GreenTea.
 --- Less common types are excluded (for now) to not clutter the library.
 --- For the ones that don't exist, you can usually use `isTypeof` or `isType`.
diff --git a/src/init.luau b/src/init.luau
index 7f8d1d2..026fa20 100644
--- a/src/init.luau
+++ b/src/init.luau
@@ -43,6 +43,7 @@ export.Rect = GreenTea.Rect
 export.Region3 = GreenTea.Region3
 export.BrickColor = GreenTea.BrickColor
 export.Font = GreenTea.Font
+export.Content = GreenTea.Content
 
 export.Enum = GreenTea.Enum
 export.EnumItem = GreenTea.EnumItem
diff --git a/src/tCompat.luau b/src/tCompat.luau
index 8db1cf6..f3a6117 100644
--- a/src/tCompat.luau
+++ b/src/tCompat.luau
@@ -99,6 +99,7 @@ implicitConstructors.Vector2 = basicType("Vector2")
 implicitConstructors.Vector2int16 = basicType("Vector2int16")
 implicitConstructors.Vector3 = basicType("Vector3")
 implicitConstructors.Vector3int16 = basicType("Vector3int16")
+implicitConstructors.Content = basicType("Content")
 
 t.type = function(typename: string): any
 	return GreenTea.isType(typename)
diff --git a/test/GreenTea.spec.luau b/test/GreenTea.spec.luau
index 52efdc1..e9fdbc5 100644
--- a/test/GreenTea.spec.luau
+++ b/test/GreenTea.spec.luau
@@ -164,11 +164,13 @@ basicTest({
 	values = { true, false },
 })
 
-local function basicBasicTest(name, value)
+local function basicBasicTest(name, ...)
+	local values = { ... }
+
 	basicTest({
 		kind = name,
 		fn = gt[name],
-		values = { value },
+		values = values,
 	})
 
 	basicTest({
@@ -176,7 +178,7 @@ local function basicBasicTest(name, value)
 		fn = function()
 			return gt.isTypeof(name)
 		end,
-		values = { value },
+		values = values,
 		describeName = `gt.basic({name})`,
 	})
 end
@@ -192,6 +194,7 @@ basicBasicTest("Ray", Ray.new(Vector3.new(0, 0, 0), Vector3.new(0, 0, 1)))
 basicBasicTest("Rect", Rect.new())
 basicBasicTest("Region3", Region3.new(Vector3.new(0, 0, 0), Vector3.new(1, 1, 1)))
 basicBasicTest("BrickColor", BrickColor.new("Bright blue"))
+basicBasicTest("Content", Content.fromAssetId(123), Content.none)
 
 basicTest({
 	kind = "nil",