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Thaumasite
Thaumasite Thaumasite
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Thaumasite (Ref: GEM25-021)

N'Chwaning Mines, Kalahari manganese field, Northern Cape, South Africa
10mm x 10mm
$1250
This is a Thaumasite from N'Chwaning Mines, Kalahari manganese field, Northern Cape, South Africa. A rare crystal of gem thaumasite, found only in a few pockets in this quality in the early to mid-1980s, and not seen since.
Data last checked on 5th Dec 2025
From: The Arkenstone
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See Also

Thaumasite
N'Chwaning I Mine, Kalahari manganese field, Northern Cape, South Africa
$1160
10mm
From: The Arkenstone
Rhodochrosite from N'Chwaning Mine
N'Chwaning Mine, South Africa
$1200
46mm x 51mm x 33mm
From: Greenstone Fine Mineralia
Thaumasite
N'Chwanning Mine, Kuruman, South Africa
$1500
34mm x 30mm x 13mm
From: Marin Minerals
Thaumasite (Huge Crystal)
N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
$2500
20mm x 10mm x 10mm
From: The Arkenstone
Ettringite
N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape, South Africa
$250
From: Arkfeld Minerals
Sturmanite
N'Chwaning Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
$1250
40mm x 40mm x 30mm
From: The Arkenstone
Jouravskite
N'Chwaning II Mine, Kalahari Manganese Field, Northern Cape, South Africa
$850
20mm x 10mm x 10mm
From: The Arkenstone
Olmiite
N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape, South Africa
$1800
30mm x 20mm x 20mm
From: The Arkenstone
Olmiite
N'Chwaning II Mine, Kuruman, KMF, Northern Cape, South Africa
$1250
70mm x 50mm x 40mm
From: The Arkenstone
Olmiite
N'Chwaning II Mine, Kuruman, KMF, Northern Cape, South Africa
$1250
70mm x 60mm x 20mm
From: The Arkenstone
Jouravskite on Xonotlite
N'Chwaning III Mine, Kuruman, Kalahari MN field, Northern Cape Province, South Africa
$950
30mm x 20mm x 20mm
From: The Arkenstone
Thaumasite
N'Chwanning Mine, Kuruman, South Africa
$350
28mm x 25mm x 10mm
From: Marin Minerals
Rhodochrosite (1.86 ct)
N'Chwaning Mines, Kalahari Manganese Field, Northern Cape, South Africa
$1850
From: The Arkenstone
Ettringite Ex Dr. Gerd Tremmel coll.
N´Chwaning II Mine | Kuruman | Kalahari Manganese Fields | South Africa
$1283 *
63mm x 40mm x 25mm
From: Wendel Minerals
Jouravskite
N'Chwaning III Mine, Kuruman, Kalahari MN field, Northern Cape Province, South Africa
$900
10mm x 10mm
From: The Arkenstone
* price is an approximate conversion and may not be accurate.

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