The internally flawless fancy vivid blue diamond and the fancy intense pink diamond, weighing 14.54-carats and 16-carats respectively, were were sold to the same anonymous buyer on May 16.
"It has been a privilege for Sotheby's to be entrusted with the superb 'Apollo Blue' and 'Artemis Pink'. The results from the sale - which saw more than 90 per cent of lots sold and three new world auction records - yet again underline the strong demand for top quality diamonds, gemstones and jewels.
"I am delighted that the stones will remain together as earrings. This has been a wonderful inaugural jewellery sale at Mandarin Oriental, Geneva which far exceeded expectations, with a total of over US $150 million," David Bennett, Worldwide Chairman of Sotheby's International Jewellery Division and Chairman of Switzerland, said.
The auction that saw a sell-through rate of 90 per cent, also set the record for a fancy intense purplish pink diamond by Piaget weighing 7.04 carats. It sold for US $13,245,750.
A pear-shaped diamond ring, weighing 32.42 carats by Harry Winston doubled its low estimate to sell at US $3,330,288, and an emerald and diamond ring by Harry Winston achieved five times its estimate and was sold for US $929,465.
Another notable sale included a ruby and diamond brooch and ear clips by Van Cleef and Arpels which sold for a combined total of US $477,551.