A very highly detailed pointed faceted sapphire necklace with a thin gold chain and gold setting, resting on a polished marble countertop, digital rational painting art by Lindsey Look, Mike Bierek, Kamila Szutenberg, David Auden Nash, Franz Vohwinkel, Volkan Baga, Sung Choi, Ryan Pancoast, fantasy highly detailed, digital concept art, sharp focus, realistic concept art rendered in Octane Render