I have managed to drag success, kicking and screaming, from potential disaster:

This is art as a technical challenge:  I made a really bad silicone mold of my carving Bluestone Ruins, ruining a layer of silicone with the wrong pigment, then running out of material.  But I was able to salvage it sufficiently for this resin cast, and I may be able to get 1 or even 2 more from this very problematic mold.

This “Blue Ruins” cast has two layers of tinted resin.  The upper layer is more translucent, but both let some light through. I won’t back light it, since the fiber and a sheet of mesh in the bottom layer would show up too much.  However there is a subtle effect from light around the edges in the right light.

Note the effects of lighting: the first 3 images are the dark translucent resin cast under different light. In the 3rd image there is an  optical illusion created by the scanner lighting. The relief appears reversed, with all the “outs” appearing to be “ins” :-). I have added a hanger & protective piece of acrylic to the back, so the piece hangs well now. It would definitely benefit from careful lighting however.

I certainly hope I do a much better job with my Moon Snail mold, coming next:  the materials are on order.