Murowa diamond mine, Zimbabwe

Cut diamond

Posted 02/29/2012  /   By editor  /  0 Comments

Diamond mine in south-central Zimbabwe operated by Rio Tinto.

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Marange diamond fields

Rough diamond

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Diamond mining region in eastern Zimbabwe.  

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Spessartine from Namibia

Spessartite from Namibia

Posted 08/31/2011  /   By SSEF  /  0 Comments

Spessartine garnet deposits in northern Namibia, world known for its stones of pure orange colour.  

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Namibian demantoid garnet

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Namibian demantoid garnet deposits, northwest of Windhoek.    

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Tourmaline and spessartine garnet from Nigeria

Spessartite from Oyo State, Nigeria

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Red to pink tourmaline (also known as rubellite in the trade) and spessartine (Mandarin garnet) finds in Oyo State, western Nigeria.

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Nigerian sapphire and green beryl mines

Emerald from Kaduna State, Nigeria

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Sapphire and green beryl mines in Kaduna State, central Nigeria.  

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Mahenge, Tanzania

Spinel from Mahenge, Tanzania

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Good coloured rubies and spinels from secondary deposits around the town of Mahenge in Tanzania.  

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Morogoro, Tanzania

Morogoro spinel Tanzania

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Deposits in Tanzania that produces mostly pinkish red rubies and spinel. Near the town of Morogoro, by the eastern slopes of the Uluguru mountain-range.

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Umba valley, Tanzania

Gemstone gravels from Umba Valley, Tanzania

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Wide variety of fancy sapphire colours, including blue sapphires. Many other gemstones, including garnets are found in the alluvial plains of the Umba valley.

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Tanzanite, Merelani, Tanzania

Tanzanite from Merelani, Tanzania

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Only source of tanzanite (vanadium bearing variety of zoisite) in the world.  

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