Platinum’s rare nature gives it additional value and appeal

Huw Daniel is the CEO of Platinum Guild International, overseeing market development activities in China, Japan, India and the USA, on behalf of the platinum producers of South Africa. Before taking up this role in 2015, Huw ran PGI USA for 12 years...

13 september 2021

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

Italian Exhibition Group (IEG) is a leader in Italy in the organisation of trade fairs and one of the main operators in the trade fair and conference sector at European level, with structures in Rimini and Vicenza, as well as further sites in...

06 september 2021

There is a significant need for smart and technological financial solutions in the diamond industry

MDPS, the Israeli start-up Fintech company from the Mazalit Group is gearing up to enter the diamond industry soon. Zeev Maimon, the CEO of MDPS is also the Founder / CEO of MAZALIT, a B2B payment platform designed and dedicated to the global diamond...

30 august 2021

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

Alex Popov, President of the Moscow Diamond Exchange and head of the Âme jewelry brand, which uses lab-grown diamonds to produce jewelry, sat for an interview with Rough&Polished sharing his views on the coexistence of natural and man-made diamonds in...

23 august 2021

De Beers’ GemFair ropes in more than 160 Sierra Leone artisanal miners

De Beers inaugurated its GemFair pilot programme in Sierra Leone’s Kono District with 14-member mine sites in 2018 to create a secure route to market for ethically sourced artisanal and small-scale diamonds. GemFair programme manager Ruby Stocklin-Weinberg...

16 august 2021

‘Fool’s Gold’ is not so foolish after all

01 july 2021
Curtin University research has found tiny amounts of gold can be trapped inside pyrite, commonly known as 'fool’s gold', which makes it more valuable than its name suggests.
This study, published in the journal Geology in collaboration with the University of Western Australia and the China University of Geoscience, provides an in-depth analysis to better understand the mineralogical location of the trapped gold in pyrite, which may lead to more environmentally friendly gold extraction methods.
Dr Denis Fougerouse from Curtin’s School of Earth and Planetary Sciences said this new type of ‘invisible’ gold has not previously been recognized and is only observable using a scientific instrument called an atom probe. He said the team also explored gold extraction methods and possible ways to obtain the trapped gold with less adverse impacts on the environment.
“Generally, gold is extracted using pressure oxidizing techniques similar to cooking, but this process is energy-hungry. We wanted to look into an eco-friendlier way of extraction,” Dr Fougerouse said.
“We looked into an extraction process called selective leaching, using a fluid to selectively dissolve the gold from the pyrite. Not only do the dislocations trap the gold, but they also behave as fluid pathways that enable the gold to be “leached” without affecting the entire pyrite,” he added.

Aruna Gaitonde, Editor in Chief of the Asian Bureau, Rough&Polished