Global Rough Diamond Production Since 1870

Janse, A.J.A.

doi:10.5741/gems.43.2.98

Cited by 31 publications

(21 citation statements)

References 9 publications

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“…Today, most of the stones extracted in and around Akwatia are characteristically small: 35–45 per cent are poor gemstone quality, referred to as boart and sold for use in industrial processes (cutting, grinding, drilling, polishing). By total volume, however, Ghana has produced the most diamonds in West Africa to date; between 1920 and 2014, 115 million carats were recovered from its soils (Janse, ; KPC, ).…”

Section: Mapping Informal Asm Economies In Sub‐saharan Africa: the Camentioning

confidence: 99%

“…These melee stones (0.001 up to 0.15 carats / 0.6 mm to 3.5 mm) trade hands regularly in mixed parcels at international markets, and depending on quality, are used in jewellery making and industrial processes (Chirico et al, 2010;Morbiwala, 2015). to date; between 1920 and 2014, 115 million 8 carats were recovered from its soils (Janse, 2007;KPC, 2016). The labour networks found in Akwatia today are deeply rooted.…”

Section: Embeddednessmentioning

confidence: 99%

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Mapping Small‐scale Mineral Production Networks: The Case of Alluvial Diamonds in Ghana

McQuilken¹,

Hilson²

2018

Development and Change

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In recent years, donors and certain governments have committed to formalizing artisanal and small‐scale mining (ASM) — low‐tech, labour‐intensive mineral extraction and processing. Few, however, are able to do so effectively because of a limited knowledge of how the sector operates, who it employs and where the commodities it mines are being channelled. This article argues that a radical reconceptualization of ASM will be needed if these challenges are to be overcome. As a starting point, it calls on donors and policy makers to adopt the Global Production Network (GPN) as a ‘lens’ for analysing the sector's organizational structures. Popular in geography scholarship, the GPN, though rarely used to study the intricacies of largely informal sectors such as ASM, could prove valuable here, aiding with the mapping of key production processes. In this article, the GPN is applied to Ghana's artisanal diamond mining sector, yielding valuable insights into its organization, the roles played by the different individuals who populate it, and the nature of the relationships between these individuals. Such information is key to designing more robust formalization and support strategies for ASM in Ghana; more generally, the exercise provides important lessons for other governments working to achieve similar goals.

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Section: Mapping Informal Asm Economies In Sub‐saharan Africa: the Camentioning

confidence: 99%

Section: Embeddednessmentioning

confidence: 99%

Mapping Small‐scale Mineral Production Networks: The Case of Alluvial Diamonds in Ghana

McQuilken¹,

Hilson²

2018

Development and Change

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“…In den USA fand man Diamanten in Montana, Colorado und Arkansas (Janse 2007;Lorenz 2007). Jedoch befinden sich die heutzutage erfolgversprechendsten Lagerstätten in Russland, Botswana, Australien und der Demokratischen Republik Kongo.…”

Section: Kohlenstoffunclassified

Kohlenstoffgruppe: Elemente der vierten Hauptgruppe

Sicius¹

2016

Essentials

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“…Official figures are hard to establish, however it is estimated that over 214 Mct, valued at over 21 US$b (based on year 2000 US$), has been produced between the discoveries in the 1930s and 2005 (Janse, 2007).…”

Section: West Africamentioning

confidence: 99%

“…Several summary publications have been very useful in this review such as Janse (2007), Wilson et al (2007), Field et al (2008), as well as the Kimberley Process website. All references to mineral resources have been standardised for the sake of comparison and estimated densities have been applied to volumes of mined material with respect to the secondary mines.…”

Section: Introductionmentioning

confidence: 99%