Platinum’s rare nature gives it additional value and appeal

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Marco Carniello: We want to continue to be the engine boosting the jewellery industry

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The future for synthetics lies in that it has become possible to grow a stone you want and make what you want out of it

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16 august 2021

Petra expands Cullinan diamond mine

30 july 2012

Petra Diamonds has awarded Murray & Roberts Cementation a contract that includes the deepening of Shaft 1 and Shaft 3 at its Cullinan mine in South Africa.
Mineweb reports that the contract was part of a major expansion plan at South Africa’s Cullinan, which would take production from just under 1 million carats in 2011 to 2.4 million carats per year by 2019, incorporating 2 million carats from underground production and 400 000 carats  from a major tailings programme.
Murray & Roberts Cementation business development director Allan Widlake was quoted as saying that the Shaft 1 portion of the contract scope meant deepening the existing shaft by approximately 350 metres to a depth of 920 metres.
The deepened shaft will be equipped to hoist the ore and waste from the new C-Cut Phase 1 block.
The Shaft 3 portion of the contract scope involved deepening the existing shaft by approximately 60 m to a depth of 904 m.
This shaft will be equipped to handle personnel and material to and from the new C-Cut Phase 1 block.
Petra, had since taking over the mine in July 2008 from De Beers, recovered several world class diamonds, including a 39 ct blue diamond, a 26 ct blue diamond and a 507 ct white diamond that was sold for $35.3 million.

Mathew Nyaungwa, Editor in Chief of the African Bureau, Rough&Polished