Lot 197, a rare coloured diamond and diamond ring in platinum and rose gold, set with a modified square-cut fancy intense green diamond weighing approximately 3.60ct (estimate: US$800,000-1.2 million)

Lot 197, a rare coloured diamond and diamond ring in platinum and rose gold, set with a modified square-cut fancy intense green diamond weighing approximately 3.60ct (estimate: US$800,000-1.2 million).