This is the first of three images immediately all are grouped together. It shows the emerald hanging at the bottom of the chain on which it is suspended. It is accompanied by the following caption:
With Katherine Blake's death in 1930, Clarence Mackay and Anna Case were married at St. Mary's Roman Catholic Church in Roslyn, New York the following year. Clarence regarded his new wife, as a woman who had stood by him without complaint, forsaking the spectacular sort of collection of gems, which propriety had previously prohibited him from giving her. So notwithstanding recent monumental financial losses, his wedding gift, was a remarkable necklace of emeralds and diamonds, beautifully set in platinum. Its Colombia emerald pendant, weighing 167.97 carats, is the largest cut emerald in America. The necklace it adorns was designed by Boucheron. At her death, in 1984, Anna Case Mackay bequeathed this magnificent jewel to the Smithsonian Institution.
See Harbor Hill, Clarence Hungerford Mackay's Mansion.