In Miss Anna Powell Mason (Mrs. Patrick Grant), the subject is depicted with a calm expression, dressed in elegant attire. The color palette features soft, muted tones, with a focus on warm browns and creams.

The background is a subtle blend of colors that enhances the figure without distracting from it. The overall composition conveys a sense of grace and poise. The painting is executed in oil on canvas, a common medium for portraits of the time. Stuart's technique is characterized by smooth brushwork and a keen attention to detail, particularly in the rendering of fabric and skin tones.

The dimensions of the artwork are approximately 76 x 63 cm, making it a sizable portrait that commands attention. The use of light and shadow adds depth to the figure, creating a lifelike representation. Gilbert Stuart was a prominent American portrait painter known for his ability to capture the likeness and personality of his subjects. This particular work, created in the late 18th century, showcases his skill in portraying women of the era with dignity and charm.

An interesting fact about this painting is that it was commissioned by Mrs. Grant's husband, reflecting the social customs of portraiture in colonial America. Stuart's portraits remain highly regarded and are considered significant contributions to American art history.