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Zimnisky: Hard to protect lab-diamond price as production methods, economics improve

Paul Zimnisky, an independent diamond industry analyst and consultant, said it will be very difficult for the lab-diamond manufactures to protect price as production processes and economics improve. He told Rough & Polished’s Mathew Nyaungwa in an exclusive...

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James Campbell: Scoping study results for SA’s Thorny River due mid-year

Botswana Diamonds appeared to have expended most of its energy and resources last year on the new Thorny River project in South Africa as its Sunland Minerals joint venture with Alrosa, in Botswana takes long to find diamonds despite significant effort...

16 april 2018

MGCJ founder Branko Deljanin: Production of synthetic diamonds is still larger than consumption

Founder and Chairman of the Mediterranean Gemmological and Jewellery Conference, MGJC, Branko Deljanin kindly agreed to answer questions from Rough&Polished related to synthetic diamonds and the upcoming 4th session MGJC in May in Budva, Montenegro.

09 april 2018

There is some magic in a diamond

Alexander Gorynya is a Director General of the St. Petersburg-based Kongo jewellery company. He is a Chairman of the Union of North-West Jewellers. In 1978, he graduated from the North-Western Extramural Polytechnic University. Since 1983, he worked...

02 april 2018

Looking for the Kimberley Process achieving further and meaningful sustainable progress

On March 7, 2018, the United Nations General Assembly welcomed the progress made by the Kimberley Process Certification Scheme to break links between the diamond trade and conflict and adopted a consensus resolution aimed at intensifying that work aligning...

26 march 2018

Tsodilo says completion of BK16 drilling programme in the offing

19 may 2017
Tsodilo Resources said a pilot hole drill programme at its BK16 kimberlite project in Botswana will be completed end of this month-end.
Fourteen holes totaling approximately 3,100 meters had been planned with 11 completed to date.
This was expected to provide just under 2 000 t of kimberlite for processing.
The pilot hole pattern was designed to achieve an approximate 50-metre grid hole spacing for the first phase large diameter drilling (LDD) sampling.
Tsodilo said the primary objectives of the pilot holes were to improve on and upgrade the knowledge of the internal geology of the kimberlite and optimise the kimberlite intersected by the LDD programme.
“Geotechnical studies of the cores will allow for the selection of the appropriate LDD drill bits based on rock hardness and the pilot hole cores will also provide a reference once the diamond recovery results have been obtained from the LDD programme,” it said.
The BK16 kimberlite project is located within the Orapa Kimberlite Field (OKF).
Of the 83 known kimberlite bodies in the OKF, nine had been or are currently being mined. These included Debswana’s Orapa and Lucara’s Karowe.

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

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