Willemite from Namibia, Oshikoto Region, Tsumeb - image 1

Willemite from Namibia, Oshikoto Region, Tsumeb - image 2

Willemite from Namibia, Oshikoto Region, Tsumeb - image 3

Willemite from Namibia, Oshikoto Region, Tsumeb - image 4

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Willemite from Namibia, Oshikoto Region, Tsumeb

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Tucson

0 for sale·Member since 2025

Stalactite/stalagmites of an unknown grey black sulfide (assuming tennantite series) coated by willemite with rosasite.

Ex. Marshall and Charlotte Sussman

Product details

Species

Willemite, RosasiteAbout Willemite →

SizeCabinet

Dimensions10.2 x 7.0 x 6.5 cm

Added on01/07/2026

Locality

Namibia, Oshikoto Region, TsumebRegional guide →

Known provenance

Date	Collector	Acquisition price
02/2025	Alex Neufeld	Not disclosed
Acquired from Leonard Himes in Tucson

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Willemite

Learn about Willemite

fluorescent zinc silicate with UV glow; daylight colors range from colorless to pistachio, iconic from Franklin–Sterling Hill and Tsumeb.

Willemite

Willemite from Tsumeb, Namibia

Tsumeb willemite is the zinc silicate for collectors who usually think of willemite as a fluorescent-mineral classic from Franklin, New Jersey, and then discover that Tsumeb rewrote the aesthetic rules. Here, Zn2SiO4 appears not as massive ore but as glassy to sparkling crystal groups, botryoidal crusts, radiating sprays, delicate acicular “lawns,” and rare individual hexagonal prisms. The colors are equally un-Franklin-like: white, gray, yellow, green, blue-green, turquoise-blue, pale blue, reddish brown, and the much-loved champagne to honey tones. The best pieces have a crisp, jewel-like presence in daylight, often on white calcite or dolomite, with the color contrast that Tsumeb collectors prize.