Built in 1800, Hank McNeil's Neo-Georgian 13, 000-square-foot Rittenhouse Square mansion is red brick and cube-shaped, with rectangular double-hung windows all aligned and a red front door flanked by Corinthian columns.
It was designed as a graduated double row of rectangular-cut emeralds, extending a pear and circular-cut diamond fringe, joined by circular and pear-shaped diamond clusters to the circular-cut diamond double row backchain, mounted on platinum.