List of Mineral Resources in South Africa

South Africa is the world largest producer of gold. It also has the largest gold reserves in the world. Majority of the goldfields were found in Johannesburg but now the major producing areas are located around Klerksdorp and Evander, although the economic viability of this mineral has declined since the 1970s.

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A Guide to Gem Classification

Gemologists use several different gem classification methods. ... Learning Center. Gemology. Science, tools, identification, treatment, valuation & grading of gems. Jewelry & Lapidary. Gemstone jewelry settings, metals, tools, cutting & …

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