N'Chwanning II Mine, Kalahari Manganese Filed
Northern Cape Province,
3.1 x 2.6 x 2.1 CM (thumbnail)
A sharp and very choice thumbnail of Thaumasite crystals on matrix in excellent condition. The crystals all have a pale color and are transparent with a slightly milky look at some angles. The largest prism is just under 2 CM long. No damage. The best of this uncommon specie was found a few years ago at NChwanning, and those are now quite scarce. This piece is from that find.
Very fine, glass clear, sharp, undamaged Thaumasite with a light yellow green color and no visible point of contact. This is the much rarer calcium silicate related to ettringite that was only been found once in such perfect, large crystals. Far better than average sharpness and clarity for this find.