The gold and silver bars fell out of the plane after the hatch door broke during takeoff.
Trump was given “no favours” on the engagement ring, the diamond seller said.
Auction house Sotheby’s named the jewels after the Greek twin divinities Apollo and Artemis.
The man who discovered the diamond, a Christian pastor, says it is worth $50 million.
Although synthetic, lab-made diamonds are similar in quality to natural ones.