An exceptionally rich, very pure mass of crystalline Proustite that has well preserved color and is fully translucent. With strong backlighting this glows like a chunk of dark red glass (we have not backlit the photos here so it gives a realistic view of the mineral in a normal display). There are numerous complex crystal faces, etched surfaces and edges on this piece but also to note some chipping too. Overall in fine condition for such a very old, vintage specimen. It was suggested that this could be considered facet rough gem stock though that is not what we do. The total weight is over 68 Grams which is certainly a lot of red Silver. With magnification some sharp complete terminated Stephanite crystals are seen. These are small but very fine with an elongated habit that make a nice association. This is from the type locale and especially choice for the large size, condition and quality overall.
Tanzanite Multi Color zoned crystal
Merelani, Umba Valley, Lelatama Mountains, Arusha Region
3.1 x 2.2 x.9 (small miniature/ large thumbnail (toenail))
A sharp gemmy Tanzanite crystal with a strong color change and dramatic zoning. Top grade glassy luster and a lot prettier in person, this shows color changes from yellow to green in the top part, and blue, purple and red in the lower part that is hard to appreciate in photos. The overall condition is fine, there are some small contact rough spots on the backside that are not easy to see and are completely invisible from the display side. The front of the specimen is clean, sharp and undamaged. Far better in person and a great value for such a clean example!
Unusually sharp and transparent crystals of Prehnite in an esthetic cluster. The crystals are in fine undamaged condition and this specimen has a lot of display impact. The Jeffrey mine is famed for its Garnets and Vesuvianite but the Prehnites found here were world class and of incredible variety. This is an excellent example showing the elongated blocky form with a delicate light green hue. Even though Prehnite is not a rare mineral and is found worldwide, good sharp crystals are rare and these from the Jeffrey are unique. Not found for some years, these are modern classics and no others from elsewhere have this look and habit.
Fluorite - gem clear
Penfiled Quarry, Penfield, Monroe County
3.2 x 2.3 x 2.3 CM (thumbnail)
An ultra clear sharp and glassy Fluorite cube perched on Dolomite. Choice thumbnail or small miniature of a Penfield New York Fluorite, this was collected more than two decades ago. Flawless with no damage at all even under strong magnification. The matrix is clearly seen through the Fluorite, which I would describe as a clear colorless ice. In some light however a very slight hint of blue is seen. A modern USA classic, New York Fluorites are relatively rare, and are prized when perfect and esthetic.
Mibladen Mine, Upper Moulouya lead district, Midelt, Khenifra Province
4 x 3.4 x 2.2 CM (miniature)
Among all the nice Vanadinite that has come from Morocco, a few pieces do stand out as having a next level of color, form or general impact. This is an outstanding miniature with that intense red color, bright luster and sharp, free standing crystals. The overall composition is attractive from almost any angle, there is just a little matrix that adds nice contrast. With the past few years production of Moroccan Vanadinites it is easy to take these for granted, yet they are clearly superb and one of the best values in the mineral market. No damage.
Calcite -"Mushroom habit"
Fengjiashan Mine (Daye Copper Mine), Edong District, Daye County, Huangs
7 x 5.4 x 4.3 CM (cabinet)
From a find in 2005 in Hubei, these mushroom like Calcites made big news then in the mineral world. We sold this example at that time and it is now back with us to be offered again. This is colored on some faces by inclusions of Hematite which adds a nice contrast. The display face is in fine condition with no visible damage, but there is a notable cleave on back of the left side that is seen from that side, and the bottom is broken at an angle so the base is also cleaved. Despite that cleave this is still an attractive displayable specimen that shows the form perfectly. The "stem" has a series of flat Calcite tabular crystal ridges that are more deeply colored red.
A striking color zoned Calcite from the San Antonia Mine, Santa Eulalia. This was mined about 20 years ago, and shows two generations of Calcite with different habits. Brilliant red color and with bright luster, the red is most likely from Hematite. The display face is in excellent undamaged condition, the only damage is along the outer edges where it was removed but even that is minimal. A distinctive, colorful Mexican piece that is much more impressive in person.
A sharp, complete and perfect textbook form Cobaltite crystal from the classic locale of Tunaberg (Sweden). The worlds best Cobaltites have come from two localities in Sweden, Tunaberg and Hakansboda. This has a trace of Chalcopyrite on one face which is more typical of Tunaberg specimens. Well above average quality, the luster and form are impeccable.