DiamondCorp has secured the final finding it required to expand one of its diamond mines in South Africa, Mining Weekly reports. By issuing convertible bonds to investors in South African and the United Kingdom, the firm raised the rest of the money it needed to further develop its operations at the Lace mine.

The diamond company announced that it raised $6.85 million by issuing 14% senior secured convertible bonds. Of that figure, $2.28 million worth of bonds were sold to customers in the U.K. and the remaining $4.57 million worth of bonds went to customers in South Africa.

Together with a recent $6 million loan from Tiffany subsidiary Laurelton Diamonds, the sale of the bonds brought DiamondCorp the full figure it needed to go ahead with its plans to develop an underground block cave that it projected to produce 1.2 million tons of ore annually, according to Mining Weekly.