$1,160Median
8Sold (12 mo)
$570Last sale
Ettringite from N'Chwaning Mines, Northern Cape, South Africa
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Ettringite is a rare calcium-aluminium sulphate and is one of the iconic minerals from the N'Chwaning Mines in the Kuruman Kalahari Manganese Field of South Africa. This is a magnificent ex-matrix crystal forming a hexagonal prism with a six-sided pyramidal termination and central pinacoidal apex. The Ettringite is a translucent, uniform brilliant acidic lemon-yellow, with a semi-transparent near-surface layer within which there is a fabulous satin lustre. One side of the prism has grown against another crystal and hence has not had space to perfectly develop across three faces, forming a depressed phantom profile across these prism faces. This is not damage, simply the Ettringite crystal accommodating the available development space. A beautiful specimen and an exceedingly rare example of such perfect colour and display habit and, of course, its enormous size.
Product details
SpeciesEttringite
SizeMiniature
Dimensions3.7 x 4.4 x 3.0 cm
Added on10/24/2024
LocalitySouth Africa, Northern Cape, N'Chwaning Mines
Current owner
Unknown Owner
- Acquired
- Jul 2026
- Price paid
- $7,500.00
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Crystal Classics | Not disclosed |
Learn more
Mineral guide
Learn about Ettringite
lemon-yellow hexagonal prisms; a fragile hydrated sulfate with notable localities like Kalahari and Eifel, Crestmore, prized by collectors.Regional guide
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