Gold, green, blue, purple. ? I sculpted epoxy clay over a wood sphere using the tools in the last photo.
The planet itself is a premade wood sphere. I made a pattern for the ring system out of chip board, checking the size and fit against the sphere. After sculpting the rings out of clay, I made a mold and pressure cast translucent purple tinted resin with laser glitter. The cast is stretchy for the first few hours after casting, allowing me to fit it precisely on the planet. The planet was painted with a supershift chameleon pigment that looks different depending on how the light hits it.
Planets included for scale. Come see a bunch of weird monsters this Saturday at Facet Gallery 7-10. event link in bio