diff --git a/src/Mod/Raytracing/App/RayFeature.cpp b/src/Mod/Raytracing/App/RayFeature.cpp
index b66eeb97b..4f249772a 100644
--- a/src/Mod/Raytracing/App/RayFeature.cpp
+++ b/src/Mod/Raytracing/App/RayFeature.cpp
@@ -47,6 +47,7 @@ RayFeature::RayFeature(void)
 {
     ADD_PROPERTY(Source,(0));
     ADD_PROPERTY(Color,(App::Color(0.5f,0.5f,0.5f)));
+    ADD_PROPERTY(Transparency,(0));
 }
 
 App::DocumentObjectExecReturn *RayFeature::execute(void)
@@ -67,12 +68,19 @@ App::DocumentObjectExecReturn *RayFeature::execute(void)
     PovTools::writeShape(result,Name.c_str(),shape);
 
     // This must not be done in PovTools::writeShape!
+    long t = Transparency.getValue();
     const App::Color& c = Color.getValue();
     result << "// instance to render" << endl
            << "object {" << Name << endl
-           << "  texture {" << endl
-           << "      pigment {color rgb <"<<c.r<<","<<c.g<<","<<c.b<<">}" << endl
-           << "      finish {StdFinish } //definition on top of the project" << endl
+           << " texture {" << endl;
+    if (t == 0) {
+        result << "      pigment {color rgb <"<<c.r<<","<<c.g<<","<<c.b<<">}" << endl;
+    }
+    else {
+        float trans = t/100.0f;
+        result << "      pigment {color rgb <"<<c.r<<","<<c.g<<","<<c.b<<"> transmit "<<trans<<"}" << endl;
+    }
+    result << "      finish {StdFinish } //definition on top of the project" << endl
            << "  }" << endl
            << "}" << endl   ;
 
diff --git a/src/Mod/Raytracing/App/RayFeature.h b/src/Mod/Raytracing/App/RayFeature.h
index 6dfc4855d..2e3769c1b 100644
--- a/src/Mod/Raytracing/App/RayFeature.h
+++ b/src/Mod/Raytracing/App/RayFeature.h
@@ -49,6 +49,7 @@ public:
 
     App::PropertyLink       Source;
     App::PropertyColor      Color;
+    App::PropertyPercent    Transparency;
 
     /** @name methods overide Feature */
     //@{
diff --git a/src/Mod/Raytracing/Gui/Command.cpp b/src/Mod/Raytracing/Gui/Command.cpp
index f5713ae67..44a454513 100644
--- a/src/Mod/Raytracing/Gui/Command.cpp
+++ b/src/Mod/Raytracing/Gui/Command.cpp
@@ -462,6 +462,7 @@ void CmdRaytracingNewPartSegment::activated(int iMsg)
         doCommand(Doc,"App.activeDocument().addObject('Raytracing::%s','%s')",FeatType,FeatName.c_str());
         doCommand(Doc,"App.activeDocument().%s.Source = App.activeDocument().%s",FeatName.c_str(),(*it)->getNameInDocument());
         doCommand(Doc,"App.activeDocument().%s.Color = Gui.activeDocument().%s.ShapeColor",FeatName.c_str(),(*it)->getNameInDocument());
+        doCommand(Doc,"App.activeDocument().%s.Transparency = Gui.activeDocument().%s.Transparency",FeatName.c_str(),(*it)->getNameInDocument());
         doCommand(Doc,"App.activeDocument().%s.addObject(App.activeDocument().%s)",ProjName.c_str(), FeatName.c_str());
     }
     updateActive();