Feral Heart

Put the gems/metalclasps ect  on a separate layer (transparent layer) directly over where you want them to appear on the preset.  Now save it as a separate layer from the preset so it's just a large transparent square with the jewelry drawn on it.

Using code like this [<---Like this but not the same]
material Preset#_Mat
{
   receive_shadows off
   technique
   {
      pass
       {
         lighting on
         scene_blend alpha_blend
         texture_unit
         {
            texture PresetSideBodyComponant-X.png
         }
      }
      pass
      {
         lighting on
         scene_blend alpha_blend
         specular 0.5 0.5 0.5 1 128
         texture_unit
         {
            texture JeweleryLayer.png
         }
      }
      pass
      {
         lighting on
         scene_blend alpha_blend
         texture_unit
         {
            env_map spherical
            texture semitransparentgold.png
         }
      }
   }
}

And for the semi transparent gold or whatever you can use a texture. It could even be pictures of fluffy clouds on a sunny day it doesn't really matter that much.  As long as you have made it & saved it as being largely transparent so you can see through it.

 The jewelry layer would be the jewelry you draw/copypasted and it should appear on top of the preset later.  With all the layers it should now sparkle.  Just make sure you name all the pictures in a way that makes sense to you & your coding our you'll have a marshmellow.


Edit: sometimes the layers don't co-operate and you'll have to reverse the order of the gold & jewels but i don't think you'll have that problem this time.