Design for a Diadem, Pen and ink, brush and sepia wash on light brown paper, Jewelry design for a diadem (small crown or tiara). Above a band are two bigger and, outside, two smaller volutes, with the scrolls bending upwards; those are connected by chains with 5 and 3 round diamonds respectively. On the cusps, ovoid diamonds on feet. In the spherical triangles of the intervals, a big round diamond surrounded by smaller ones. Upon the band and the volutes are rows of diamonds., possibly Siena, Italy, early 19th century, jewelry, Drawing, Drawing