diff --git a/src/Base/Builder3D.cpp b/src/Base/Builder3D.cpp
index f2d77f8c8f..40c2ac8f55 100644
--- a/src/Base/Builder3D.cpp
+++ b/src/Base/Builder3D.cpp
@@ -546,6 +546,33 @@ void PolygonOffsetItem::write(InventorOutput& out) const
 
 // -----------------------------------------------------------------------------
 
+Coordinate3Item::Coordinate3Item(const std::vector<Vector3f>& points)
+    : points(points)
+{
+}
+
+void Coordinate3Item::write(InventorOutput& out) const
+{
+    beginPoint(out);
+    InventorFieldWriter writer;
+    writer.write<Vector3f>("point", points, out);
+    endPoint(out);
+}
+
+void Coordinate3Item::beginPoint(InventorOutput& out) const
+{
+    out.writeLine("Coordinate3 {");
+    out.increaseIndent();
+}
+
+void Coordinate3Item::endPoint(InventorOutput& out) const
+{
+    out.decreaseIndent();
+    out.writeLine("}");
+}
+
+// -----------------------------------------------------------------------------
+
 void PointSetItem::write(InventorOutput& out) const
 {
     out.writeLine("PointSet { }");
diff --git a/src/Base/Builder3D.h b/src/Base/Builder3D.h
index 83587a1101..788271528e 100644
--- a/src/Base/Builder3D.h
+++ b/src/Base/Builder3D.h
@@ -354,6 +354,21 @@ private:
     PolygonOffset offset;
 };
 
+/*!
+ * \brief The Coordinate3Item class supports the SoCoordinate3 node.
+ */
+class BaseExport Coordinate3Item : public NodeItem
+{
+public:
+    Coordinate3Item(const std::vector<Vector3f>& points);
+    void write(InventorOutput& out) const override;
+
+private:
+    void beginPoint(InventorOutput& out) const;
+    void endPoint(InventorOutput& out) const;
+    std::vector<Vector3f> points;
+};
+
 /*!
  * \brief The PointSetItem class supports the SoPointSet node.
  */