Jewel was from the collection of Queen Nazli, former queen mother of Egypt.
10.08-carat piece will headline November 12 Geneva High Jewelry auction.
Company has promoted Max Fawcett and Claibourne Poindexter within their division.
Production up 110% year on year in third quarter.
Division down 2% in third quarter.
Company lets Alisa Amupolo go after disciplinary hearing, citing operational decisions that led to losses.
She is currently the company’s chief trade and industry officer.
A jadeite, ruby and diamond necklace with $7.5 million high estimate was withdrawn.
Early festive season and improved diamond demand also drove increase.
State trader Okavango says it planned sale in advance and chose to withhold goods for market management purposes.
Total spending to rise 5.3% year on year, according to Adobe.