Photorealistic editorial portrait of a fictional adult woman, age 29, dark hair in a polished bun with a few loose strands, composed intelligent expression, wearing a plum satin camisole with lace edging and a black robe draped open, seated at a scholar's desk turned slightly toward the camera. On the desk: a closed burgundy hardcover book with a completely plain cover and a cream ribbon bookmark, beside a brass armillary sphere made of mirror-polished featureless rings, every surface completely smooth and shiny with absolutely no engravings, no etched texture, no numbers and no markings of any kind. Warm study lamplight, shallow depth of field, tasteful glamorous boudoir mood, no text, no letters, no words, no numbers, no watermark, no logo, no readable markings anywhere.