Program aims to educate young consumers about mined stones’ positive qualities.
Dubai-based Gaston International, which Dev Shetty founded, buys Lulo deposit and all other assets.
Total prices achieved for goods at sale surpassed reserve by 17%.
Diamond is third-largest recovered from Angola site.
Stone is third largest ever recovered from deposit and 37th over 100 carats.
Diamond is miner’s first over 100 carats this year and its 36th overall.
Higher average price boosted revenue in fourth quarter.
Sale included special production from Lulo, Catoca and Luaxe mines.
Rough sales up 42% year on year in third quarter.
Miner unearths 113-carat rough from its Lulo deposit in Angola.
Type IIa stone is site’s fourth 100-carat-plus discovery this year, according to Lucapa Diamond Company.