In Saint Andrew, Anthony van Dyck presents the apostle in a contemplative pose. The painting features rich colors, primarily deep blues and warm earth tones. Andrew is depicted with a thoughtful expression, his gaze directed slightly upward.

The background is dark, which enhances the figure's prominence and adds a sense of depth. The artwork is executed in oil on canvas, a common medium for Baroque painters. Van Dyck's technique is characterized by smooth brushwork and a careful balance of light and shadow. The dimensions are approximately 100 x 130 cm, making it a substantial piece.

The composition draws the viewer's eye to Andrew's face, emphasizing his spiritual presence. Anthony van Dyck was a prominent Flemish painter known for his portraits and religious works. This painting of Saint Andrew reflects his mastery in capturing human emotion and character. An interesting fact about this work is that it was created during van Dyck's time in Italy, where he absorbed influences from the Italian Baroque style.

This piece exemplifies his transition from the Northern Renaissance to a more expressive Baroque approach.