Emerald Green , Sapphire Blue Gem City; Mythology; mythological architecture; mythological civilization; Sir Augustus Wall Callcott matte painting trending on Artstation Unreal Engine VRay; Pixar; Hyperdetail City Made of Emeralds and Sapphires 100 Megapixels; Hyperdetail; Hiroo Isono and David B. Mattingly Steve Chin Hsuan Wang; Simon Stålenhag