Worked on the shader some more by adding a new layer meant to simulate the fracturing inside a stone. I also began integrating the dragon into the scene.
Layers:
There are 9 layers in total, the 6 six shown below make up the shader. From Left to Right: Subsurface, Transmission 1, Transmission 2, Occlusion, Fresnel Mask.
Below is the how I combined those layers.
The last 3 were used to build the shadow. Left to right: Fake Caustic, Occlusion, Shadow Mask.