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246 specimens listed
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Fluorite on Quartz
stock #AX-14-347
Orange River, Namakwa
Northern Cape Province, South Africa
3.6 x 1.4 x 1.3 CM (thumbnail)
price: $145
Late Summer 2021

A cute thumbnail with transparent, colorless Fluorites that have vivid purple cores or phantoms. These are all clustered on two faces of a clear Quartz crystal. The Quartz and the Fluorites are in fine condition. From a find about 4 years ago in the Orange River region (South Africa) this is just barely a thumbnail but will fit in a perky box.

Fluorite
stock #21.1-339
Cantera Llamas, Duyos, Caravia
Asturias, Spain
2.9 x 1.8 x 1.8 CM (thumbnail)
price: $480
Late Summer 2021

A pair of edge modified cubes of transparent Fluorite in an esthetic cluster. The condition is incredible with textbook perfect form, the color a light violet and the one crystal is tabular. An excellent large thumbnail, it is hard to capture the clarity and form in photos, in person it is especially impressive. The faces appear glass-like and smooth at first but on close inspection with good lighting the surfaces are covered with tiny geometric growth structures. A few very tiny Fluorite cubes are perched on this as well, and there is a shard of snow-like Quartz matrix that adds a nice sparkle. Aside from a small cleave on the underside of the lower crystal (not visible on display) this is perfect from all points of view, competitive quality.

Goethite pseudomorph after Pyrite - USA classic locale
stock #7.AE-229
Green Monster Mountain, Prince of Wales Island, Prince of Wales Island
Alaska, United States
2 x 1.6 x 1.2 CM (thumbnail)
price: $330
Late Summer 2021

A perfect thumbnail of a complete undamaged pseudomorph from the famed Green Monster Mountain (Alaska). This is the sharpest example of this replacement I have seen from this locality, though there are very few pieces to compare out there. This is a 360 degree specimen with textbook form and clean edges. One small spot shows a little remaining Pyrite which is surprisingly very lustrous. This is a classic locality for Epidote though the related minerals are much less well-known. Ex. A. Edwards collection, a fine small thumbnail.

Mimetite - modern classic
stock #21.1-291
San Pedro Corralitos, Municipio de Casas Grandes
Chihuahua, Mexico
2.8 x 2.3 x 2.7 CM (thumbnail)
price: $690
Late Summer 2021

From San Pedro Coralitos, an older specimen with excellent form. Well-defined bright yellow balls of Mimetite are in both clusters and isolated on contrasting matrix. I have not seen many good thumbnails from this famed locality where most specimens were larger but this one is especially esthetic. In perfect condition on the display side, there is only a small contact on the backside of one ball not visible on display. There is no damage anywhere, this is a competition quality thumbnail.

Fluorite - gemmy
stock #21.1-317
Cantera Llamas, Duyos, Caravia
Asturias, Spain
3.1 x 2.3 x 2 CM (thumbnail)
price: $550
Late Summer 2021

Limpid clear and perfect a single modified cube of light violet Fluorite on a small matrix druse of Quartz. Some faces are perfectly glass-like while other have some etched growth structures. The insides of the cube are fully transparent with no inclusions. From the small but remarkable locality of Cantera Llamas, this is far better than typical for this find, a competition grade thumbnail. The clear cube is more impressive in person as the color and clarity are hard to render on a computer screen.

Sphalerite - gemmy crystals
stock #18-AX-418
ZCA corporation / Pierrepont Mine, Pierrepont, St Lawrence County
New York, United States
2.2 x 1.8 x 1.4 CM (thumbnail)
price: $240
Late Summer 2021

A very lustrous Sphalerite thumbnail. This is a sharp and fully transparent honey-yellow crystal from a classic Northeastern US Locality. The ZCA Mine in Saint Lawrence County has been the source of many fine minerals. This specimen is twinned as seen and has several complex growth structures on some faces as well as some flat glass-like ones as well. A few rough edges from contacts but overall in very good condition. What looks like inclusions inside the crystals in the photos is actually other crystals on the backside seen through the clear Sphalerite. Not many of these make it to the market, this specimen is from an older collection and was collected at least 25 years ago.

Olmiite (Poldervaartite)
stock #8.AE-945
N Chwaning II Mine, Kalahari Manganese Filed
Northern Cape Province, South Africa
2.9 x 2.8x .8 CM (thumbnail)
price: $180
Late Summer 2021

A cute thumbnail of what was once a very rare mineral. This find was very important and large, the mineral was no long incredibly rare and it was also realized most of these were actually more accurately identified as another rare mineral, Olmiite. The South African discovery was and is the world's best and for all practical purposes the only locality for good specimens. This piece has a nice 1.8 CM crystal with the faces showing complex modification so it looks stepped and rounded. In fine condition, the color seems to vary depending on the light source from a brownish to orange hue. The matrix is a thin plate with a druse of clear Calcite crystals.

Ripidolite (Clinochlore) pseudo after Garnet
stock #AX-19-122
Spurr Mine, Imperial Heights, Baraga County
Michigan, United States
2 x 1.8 x 1.7 CM (thumbnail)
price: $80
Early summer 2021

A complete 360 degree Garnet crystal fully replaced by the Ripidolite (var. of Clinoclore) with a tiny sliver of matrix. A classic from Michigan, these were at one time called Aphrosiderite, and the replacing materials were usually referred to as Chlorite. This thumbnail is quite sharp and has kept some small edge modifications seen on some faces. The source of this one is the Spurr Mine, most others we have seen do not have specific localities.