A fine, well crystalized old Danburite from Russell, New York. A classic of the Historic St. Lawrence County region, this specimen is from the late Ingeborg Burggraf collection. Several zones on the matrix host dense clusters of Danburite crystals with several habits, most being transparent to translucent and fairly glassy. The crystals reach over 1.3 CM though the majority are smaller. Uncommon on the market, the clear type like this are usually somewhat smaller in size this is well above average for quality.
Cobaltoan Calcite with Malachite
Kolwezi, Katanga Copper Crescent
Democratic Republic of Congo (Zaire)
4 x 3.7 x 3.5 CM (small miniature)
A small, colorful and cute specimen from the Katanga Crescent (not the more common Moroccan type). There are two separate vugs on this piece with brightly sparkling purple-pink crystals and a few sprays of green Malachite adding contrast. Some bruising on edges is noted but still a pretty and affordable small piece.
stock #20 AE-7-082 B
Parun Pegmatite Field, Wama District
5.4 x 3.2 x 3.1 (cabinet)
A big, glassy crystal with a very dark blue-green shaft becomes a lighter blue near the top, then grades to a water clear zone and ends with a thin reddish purple cap. Well terminated with a transparent flat top and with great luster. In very good condition, with only very tiny bits of edge wear that is not easy to spot and a small unobtrusive chip on the back. An older piece this color combination is not very common. The top portion is all gem clear but the majority of the crystal is rather dark and only a little light passes through. Displays well and a good value for a stout single crystal. A hefty 106 grams.
From the Idar Oberstien area that is famed for its Basalt flow minerals most notably fine Agates. This is a delicate and sharply formed replacment of a flowerlike spray of Glauberite bladed crystals enclosing a vug. All the Glauberite are now replaced by Quartz with the inner part showing a zone of Amethyst fingers. Some fingers show the hollow void where the Glauberite crystals had been. An older specimen ex Ruth Palmer and William Hladysz collections. This is a bit similar to some New Jersey (USA) casts often seen with Prehnite replacing Anhydrite.
Perfect, gemmy and absolutely colorless, this looks just like ice. A natural sculpture of a single etched Beryl crystal, this is also a complete floater. Every surface is complexly faceted, etched and undamaged. Not many minerals can exhibit this degree of sharp sculptural etching, however we see this with Beryl from a few finds and these can be incredible in person. True colorless Beryl (Goshenite) is also quite uncommon. This specimen is displayable from any side or angle, the larger faces are smoothly curved yet striated and it is fully transparent with no inclusions, veils or cracks. Choice gem..
Perfect, gem clear and absolutely colorless, this looks just like ice. A natural sculpture of an etched Beryl crystal, this is also a complete floater, every surface is complexly faceted, etched and undamaged. Not many minerals can exhibit this degree of sculptural etching, however we do see this with Beryl from a few finds and these can be incredible in person. True colorless Beryl (Goshenite) is also quite uncommon, this specimen is displayable from any side or angle, the larger faces are smoothly curved yet striated and it is fully transparent with no inclusions, veils or cracks. Choice.
Datolite (color change) and Heulandite
Prospect Park Quarry, Prospect Park, Passaic County
5.1 x 3.2 x 2.8 CM (small cabinet/ large miniature)
Datolite with a strong color change from artificial to daylight, the color goes from a dark olive-green to a yellow-grey. From a remarkable pocket at the classic Prospect Park Quarry locality in 2008, there were not many pieces found. This has contrasting Huelandites with a warm brown color and shows the uncommon color change phenomenon very well. The Datolite is transparent with many faces being very glassy. There is contacting and bruising that can be hidden fairly well by display angle, so not for perfectionists. Overall the condition is equal to the best I have seen from this find, and a cute Northeastern USA oddity.
A single doubly terminated Corundum crystal that shows classic form and habit. This is vividly fluorescent an intense red which is normal for Ruby. The terminations are flat, smooth and have some intersecting lines visible. The crystal faces have typical very rough texture. Strong light penetrates the sides of the crystal showing some degree of translucence. Older specimen (1960's vintage) with nice form and great fluorescence.