Prompt: Jewel. Glowing emerald ring. Black. Xylobium style, Digital Art, perfect composition, beautiful detailed intricate insanely detailed octane render trending on artstation, 8 k artistic photography, photorealistic concept art, soft natural volumetric cinematic perfect light, chiaroscuro, masterpiece, oil on canvas, Tom Blackwell, Gerhard Richter, Thomas Kinkade
Negative prompt: ugly, deformed, poor