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Mineral Specimens with Quartz
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3.1 x 3 x 1.3 cm. Shattuckite in and of itself is a lovely mineral, and is becoming more highly desired for its gorgeous light blue botryoidal crusts. Here, incredibly, you have quartz included by Shattuckite. This gives the gemmy sparkling Quartz a rich deep blue color best described as a sapphire blue. Add a few Malachite crystals, one of which is even coated by the Quartz, and you have an interesting combination specimen.
7.6 x 6.1 x 5.0 cm. A fine 3-cm crystal of aegerine sticks up amongst smokies of Swiss quality, on a bed of euhedral feldspar crystals! The smokies and aegerine are all terminated and in pristine condition.
19.8 x 18.7 x 6.5 cm. From the find of this stunning combo around two years ago - one of the very top, a killer all around, BIG, with superb crystals in a wonderful balance.
28.5 x 23.4 x 9.1 cm. This spectacular showpiece was probably trimmed from the inside of a giant geode, and considered more valuable as a large cabinet specimen than as a huge geode. It features an 11-inch band of fabulous calcite crystals, to 4.5 cm in height, bursting in all directions and running right through the middle of this large plate of very gemmy, razor-sharp and glass-lustered amethyst crystals.
27.4 x 23.1 x 7.1 cm. These very distinctive amethyst specimens from Irai consist of a thin plate of matrix covered with blooms of lavender amethyst, with crystals ranging from little clusters to large sprays. This is a very large one, with nice separation between the amethyst blooms that give the surface a pretty 3-dimensionality - the clusters stick out in bold relief from the matrix.
8.9 x 6.2 x 4.7 cm. What a beautiful and unique Eastern European specimen! On a bed of quartz crystals is a cluster of elongated quartz prisms that have been pseudomorphed by sparkling microcrystals of calcite.
19.4 x 5.9 x 4.9 cm. A BIG, impressive, complete stalactite of amethyst, from Artigas, Uruguay. The light lavender crystals have a wonderful sparkle and luster to them. The bottom of the stalactite has been polished, so that you can see the successive layers of growth of milky white crystals that came before the final amethystine crystals.
5.2 x 4.2 x 2.8 cm. Galena can be really mundane, or it can be quite spectacular, is on this extremely aesthetic Eastern European specimen. The architectural stacking of these crystals, and the way they are set so beautifully amongst the translucent quartz crystals, makes this specimen really special.
12.4 x 10.3 x 6.8 cm. This is a large and beautiful combo piece featuring a water-transparent, very light blue aquamarine crystal (2.5 cm) jutting out of a matrix studded with quartz crystals, muscovite books and a large, sharp, textbook orthoclase crystal (right near the aqua). There is another fine orthoclase crystal near the larger one.
6.8 x 4.2 x 3.2 cm. Rose quartz is very rare in good crystals, and is the most prized of the quartz varietals. This beautiful specimen features a 4.5-cm finger of flashy, pastel-pink crystals lying along the side of euhedral quartz crystal. The way the fine rose quartz sits against this backdrop makes this a very special piece!
20.4 x 18.0 x 8.9 cm. A fabulous large pseudomorph from Morocco, strikingly aesthetic on top of being really interesting! Amethyst has pseudomorphed two gigantic fluorite (or perhaps calcite. There is some debate about this and I am not sure its universal one or the other in any case) crystals, retaining their sharp rectangular form. The two pseudomorphs are beautifully perched on an underlying thin plate of quartz matrix, standing out in bold relief. The calcites are partly or mostly replaced by the quartz (amethyst), and likely at least partially hollow in the middle. The whole specimen sparkles - and it is so large that it qualifies as a real grand showpiece, which few pseudomorphs do - most are more “interesting" than big and beautiful! Ex. Elling collection.
25.4 x 17.2 x 8.6 cm. The Blanchard is best-known for teal-blue fluorites, but there are several mines at the locality in fact, and each produces slightly different crystals. One of the adits turned out these deep purple crystals! They measure to 1.5 cm, and are nicely transparent. What makes them particularly pretty are their contrast with the field of orange quartz on which they sit.
13.3 x 12.1 x 5.8 cm. This is a killer specimen of Las Vigas amethyst. The reason it is so fine is not just its size, and the fact that Las Vigas amethysts are amongst the finest in the world, but most importantly for the intensely saturated color in these crystals. The crystals measure to 2.5 cm, and are beautifully isolated on the matrix.
10.9 x 10.6 x 6.4 cm. On a large mound of matrix are sprinkled deep wine-red, very lustrous spessartines to one centimeter, standing out against the stark white cleavelandite and quartz. There are some euhedral quartz crystals as well, and embedded in the matrix are small books of muscovite.
7.9 x 7.7 x 3.7 cm. Quartz is mined by the ton in Arkansas, but the truly unusual or high-quality crystals from there still get a lot of attention. This one is truly exceptional for its form - very rare from here. It features a typical prismatic, doubly-terminated milky crystal, atop of which is a gemmy crystal of extremely unusual truncated form, so far modified from the common prism that it is difficult to even describe the crystallography.
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Rob Lavinsky, rob@irocks.com
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share specimen![Shattuckite, Quartz, Malachite from Kaokoveld Plateau, Kunene Region, Namibia [db_pics/mdpics/MD-118703a.jpg]](db_pics/mdpics/MD-118703a.jpg)
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![Quartz (Var: Amethyst) from IraÃ, Alto Uruguai region, Rio Grande do Sul, South Region, Brazil [db_pics/mdpics/MD-118763a.jpg]](db_pics/mdpics/MD-118763a.jpg)
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![Quartz (Var: Amethyst) from Artigas, Artigas Department, Uruguay [db_pics/mdpics/MD-118766a.jpg]](db_pics/mdpics/MD-118766a.jpg)
![Galena, Quartz from Septemvri mine (Deveti Septemvri mine), Madan ore field, Rhodope Mts, Smolyan Oblast, Bulgaria [db_pics/mdpics/MD-118770a.jpg]](db_pics/mdpics/MD-118770a.jpg)
![Beryl (Var: Aquamarine), Orthoclase, Quartz from Shigar Valley, Skardu District, Baltistan, Northern Areas, Pakistan [db_pics/mdpics/MD-118773a.jpg]](db_pics/mdpics/MD-118773a.jpg)
![Quartz (Var: Rose Quartz), Quartz from Ilha claim, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-118776a.jpg]](db_pics/mdpics/MD-118776a.jpg)
![Quartz (Var: Amethyst) from Bou Bekker (Bou Becker), Touissit, Touissit District, Oujda-Angad Province, Oriental Region, Morocco [db_pics/mdpics/MD-118778a.jpg]](db_pics/mdpics/MD-118778a.jpg)
![Fluorite, Quartz from Blanchard Mine (Portalas-Blanchard Mine), Bingham, Hansonburg District, Socorro Co., New Mexico, USA [db_pics/mdpics/MD-118794a.jpg]](db_pics/mdpics/MD-118794a.jpg)
![Quartz (Var: Amethyst) from Piedra Parada (Piedras Parado), Mun. de Tatatila, Veracruz, Mexico [db_pics/mdpics/MD-118795a.jpg]](db_pics/mdpics/MD-118795a.jpg)
![Spessartine, Quartz, Albite (Var: Cleavelandite) from Heinuchal, Haramosh Mts., Skardu District, Baltistan, Northern Areas, Pakistan [db_pics/mdpics/MD-118796a.jpg]](db_pics/mdpics/MD-118796a.jpg)
![Quartz from Mt Ida, Montgomery Co., Arkansas, USA [db_pics/mdpics/MD-118800a.jpg]](db_pics/mdpics/MD-118800a.jpg)