The stock closed 4.17% higher in London Tuesday after the miner revealed the discovery of two rare matching rubies from its Montepuez mine in Mozambique.
The country's radical Association of Mineworkers and Construction Union (Amcu) said it would begin a wildcat strike in the sector if its rival union and companies extend wage deal to its members.
At its centre will be a shift of emphasis away from trade with the advanced nations, whose prospects are bound to subside towards their level of economic growth.
Mali, Papa New Guinea, Burkina Faso, Guinea, Tanzania, DRC and Mongolia among countries where gold mining contributed the most to their locals economies, says the World Gold Council.