Valery Budny: There is no strategy and legislation in Russia enabling the full cycle processing of precious raw materials within the country

Valery Budny, Head of the Jewelry Russia program and CEO of the JUNWEX media holding, told Rough&Polished about the results of the meeting and pressing issues in the precious metals and precious stones (PMPS) and the jewelry sectors.

11 april 2024

Paul Zimnisky: Natural diamonds face the risk of eroding their appeal if constantly discounted

New York-based independent diamond and jewellery analyst and consultant Paul Zimnisky told Rough & Polished’s Mathew Nyaungwa in an exclusive interview that the industry should do away with discounts. He said the industry should treat natural diamonds...

01 april 2024

Edahn Golan: Lab-grown diamond prices to continue declining

In an exclusive interview with Rough&Polished's Mathew Nyaungwa, Edahn Golan, proprietor of the eponymous Edahn Golan Diamond Research and Data, predicted that the prices of lab-grown diamonds would continue to decline, especially at the retail and...

25 march 2024

ADPA’s Ellah Muchemwa: G7 restrictions to bring extra costs from diamond mining to retail

The African Diamond Producers Association (ADPA), which has openly registered its disdain for the G7’s rough diamond trade restrictions, is of the opinion that the move will bring extra costs on all stages, from mining to retail. ADPA executive...

18 march 2024

Eduard Gorodetsky: Currently we see high demand for synthetic diamonds for use in technology segment rather than in jewelry

Director General of the Advanced Synthetic Research Center Eduard Gorodetsky told Rough&Polished about the current situation at the company, new exclusive technologies in the synthesis and production of lab-grown crystals, as well as the Research Center’s...

11 march 2024

Copper 360's Rietberg has proven high copper recovery, grade

06 july 2023

Copper 360 says metallurgical test results from drill core samples from the Rietberg copper mine in South Africa’s Northern Cape have verified significant copper recovery and concentrate grades.

It said that at particle sizes of 80% passing 75 microns, copper recovery was greater than 90%.

Copper 360 said the concentrate grade was more than 48% after one cleaning stage, compared to a standard of 25%.

The test results exceeded the company's expectations, resulting in more copper recovered with less energy, which will have a very positive impact on the bottom line of the new processing plant being built, according to Copper 360.

Copper 360 hired South Africa's SGS Metallurgy and Mineralogy Division to analyse a representative sample of the Rietberg orebody.

The SGS findings supported previous findings of good recoveries and high concentrate grades from Namaqualand Copperbelt ores.

SGS is presently doing variability testing.

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