Thank you @jacobkaled! I have never worked with stone. Very cool. It is actually a resin "garage kit" and the dome on top is vacuformed clear plastic. I believe the original master was 3d printed and the digital files were from scans of the actual Alien suit.

I also sculpt. You would still work in clay/sculpey and than make a silicone mold and than cast parts in a two part resin. There are clear resin models. I have a Shin Godzilla in clear that I intend to light up one day.

I see you also do 3d and game design. Nice artwork, keep posting! :)