Think about how you would like the end mold to look - for example, what if you enclosed the object in a glass mould box?To do this:
First, you would take a piece and wax polish it with wax release agent until it is nice and shiny.
Then, put strips of cut glass around to make the frame.
Next, use silicone sealer to stick the glass to the glass.
Then, use a translucent pigment to color a ...