Sargent portrait painting, three-quarter of a 53-year-old American woman with a weathered oval face and silver-streaked blonde waves in a bun, wearing a high-collared charcoal wool gown with a diamond brooch, seated at a writing desk with a pen, alla prima strokes in the wool and lace cuffs, direct gaze with intellectual intensity, warm desk lamp key with deep shadows, charcoal-and-diamond grade with wool texture depth, authoritative presence mood <lora:training_7185876-20260925065114500-wd6e:1>,