Brazil has supplied collectors with wonderful mineral specimens for decades.
The gem material such as tourmaline, aquas and topaz receive most of the
acclaim, however there are a great diversity of Brazilian minerals worth noting.Brazil Mineral Specimens
Brazil has supplied collectors with wonderful mineral specimens for decades.
The gem material such as tourmaline, aquas and topaz receive most of the
acclaim, however there are a great diversity of Brazilian minerals worth noting.
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OKF-372 Spodumene Vittoria da Conquista, Brazil. This crystal is all gem material, and is a light yellow color. The piece measures 8.2 x 1.3 x .6 cm. It is highly etched and shows minor internal fracturing. Too thin to cut into substantial gemstones, this specimen is well suited as a display piece. No damage. $65
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OKF-341 Hematite pseudo. after Magnetite. Santa Rosa, Brazil Ex. Dr. Steve Chamberlain collection. Prev. Bob Metzger, 1980. A beautifully formed grouping of magnetite crystals to 1.5 cm on edge which is now replaced by hematite. 3.7 x 2.6 x 1.7 cm and composed of numerous large octahedrons. The surface features are interesting, the luster nice, aesthetics excellent and the location desirable. A showy specimen for the discriminating collector. $170
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OKF-344 Hematite Santa Rosa, Brazil. Ex. Dr. Steve Chamberlain collection. High luster hematite octahedrons with other modifications to 2.5 cm each in a small cluster measuring 3.2 x 2.5 x 2.1 cm overall. A couple small chips but very nice still. Interesting growth hillocks on some faces. $50
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OKF-185 Tourmaline Bama de Soliso, Minas Gerais, Brazil. Ex. Nancy Collins collection. The single crystal seen here measures 1.4 cm in length has moderate striations and is totally gem with only one small internal fracture near the termination of the crystal. The piece is an rich indicolite blue color and highly aesthetic. $100
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OKF-175 Hematite Itabira, Minas Gerais, Brazil. Ex. Dr. Steve Chamberlain collection. This large stocking hematite appears cubic in form. It measures 2.5 cm on edge and its surface is highly fractured along one area between crystal faces. The surface appears flaked away. This region is all fully crystallized as is the rest of the specimen. This is a very stable stocky hematite crystal with the highest of luster and is simply bizarre form. A very desirable piece. $295
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OKF-214 Uvite on Magnesite Burmudo, Bahia, South America. Within the center of these clear magnesite crystals can be seen a 1.1 cm, heart-shaped, translucent tourmaline. A wonderful display piece which sits on edge. The magnesite sera to 1.2 cm on edge each. The attractive example of material which was once relatively common. $190
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OKF-206 Titanite Twins on Albite and Epidote Minas Gerias, Brazil. A very displayable grouping of gem titanite crystals to .9 cm on edge with albites to 1.7 cm. I'll crystals are well formed and attractive. One titanite on the edge of the piece, near the top, is broken off. 9.5 x 5.1 x 1.7 cm. A few of the albites are somewhat dirty looking but generally this is an attractive specimen. $150
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OKF-125 Siderite and Dolomite Minas Gerais, Brazil. Ex. Nancy Collins Collection. 6.6 x 6.5 x 3.4 cm plate of crystals which are all in tabular crystals. The contrast between the white calcites and the gemmy/ translucent siderites is very nice. Lots of depth to this specimen which is not readily evident in the photos. One siderite has a minor edge rub otherwise it is in fine condition. Unknown mineral included the calcites. Difficult to find this material. A desirable and displayable specimen. 425$
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OKF-054 Epidote Capelinha, Minas Gerais, Brazil. Ex. Art Edwards Collection. I’ve owned lots of these over the years but I think this is one of the best I have see. It measures a huge 12.8 x 5.8 x 2 cm thick. A few small quartz crystals on the front surface and you have a fine displayable piece. One edge near its base has an area of contact, otherwise there is no damage ot this impressive specimen. Its luster is very high and it is slightly translucent. A nice deal at 350$
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OKE-363 Hydroxyl-herderite Barra do Salinas, Minas Gerais, Brazil. Ex. Art Edwards Collection. BIG crystal of this rare species which measures 3.1 x 2.8 x 1.8 overall. Nice purple color and excellent form to this single terminated crystal. Luster is also excellent. There is minor albite on terminal face. Very displayable crystal. 490$
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OKD-769 Watermelon Tourmaline Minas Gerais, Brazil. Ex. Jim Turek Collection. A nice 4.4 cm long and 2 cm thick watermelon tourmaline with one end crudely regrown and the second broken showing the bright red core surrounded by green. Several tightly attached rider crystals to 3 cm each. Good, classic material. 200$
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OKD-770 Hematite Minas Gerais, Brazil. Ex. Jim Turek Collection. A fine cluster of bright silver hematite crystals to 1.7 cm each. They are not tabular. These are thick blocky crystals with a complex habit. The specimen measures 4.7 x 3.2 x 2.2 cm overall and is somewhat dome shaped. A few micro dings but actually in extremely good condition. Very sharp and displayable. 125$
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OKD-251 Quartz, Siderite, Pyrrhotite Morro Vehlo Gold Mine, Minas Gerais, Brazil. Ex. Dr. Steve Chamberlain Collection. Here is another highly aesthetic miniature composed of several clear quartz points to over 3 cm each rising off of a flat quartz matrix. Also rising off this matrix are well formed blades of siderite to 1.7 cm each. Within and on these crystals are tiny metallic tabular pyrrhotite crystals to a couple of millimeters each. It measures 5 x 3.5 x 2.5 cm and the body of the piece is damage free. There is one siderite crystal on the extreme edge that has been cleaved off. A showy, older specimen. 100$
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OKD-466 Rose Quartz on Milky Quartz Minas Gerias, Brazil. Second generation rose quartz crystals are set high on the matrix of crystallized milky quartz in a thick band visible from all sides of this fine specimen. A very large specimen from this famous producer of rare rose quartz crystals which measures 9.3 x 7 x 6 cm overall with individual crystals to 1.6 cm. There is some very minor damage which does not distract from the display characteristic which make this a highly aesthetic and very desirable specimen (but it has been taken into account when it comes to the specimen’s price). Sits nicely for display, super luster and wonderful form. This specimen has great views from all directions except one side. 1,400$
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OKD-537 Rose Quartz Crystals Espirto Satato, Brazil. Cute little 2.3 x 2.2 x 2 cm specimen composed of lots of pink quartz crystals. Crystals to 1.6 cm. Nice clean specimen. 70$
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OKD-538 Rose Quartz Crystal Espirto Satato, Brazil. 4.2 x 2.5 x 2.2 cm cluster with crystals to 1 cm each. Small book of mica on back of specimen. Damage free and attractive. 150$
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OKD-522 Tourmaline Santa Rosa, Brazil. Ex. Nancy Collins Collection. Here is a blue tourmaline, indicolite, seldom seen for sale today. These normally get cut into gemstones. This one is not large but does have lots of character. It is made of three parallel growth crystals which are all damage free and nicely terminated. The surface hillocks on the terminations are very interesting. Zoned growth has lead to a clear cap and translucent lower section to each crystal. 2.3 x 1.9 cm. Excellent specimen! 220$
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OKD-461 Kunzite near Governador Valadares, Minas Gerais, Brazil. This crystal has a pleasant purple, pink cast, nice clarity and an attractive form. Deep purple color when viewed down the “c” axis. The chisel shaped termination is slightly rounded due to natural etching. Minor surface etching, as well. 6 x 1.5 x .7 cm. A nice gem crystal for only 80$
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OKD-464 Tourmaline Minas Gerais, Brazil. A very aesthetic grouping of crystal composed of two primary crystals measuring 4.1 and 4.3 cm each. Overall the specimen measures 5.5 x 3 x 1.7 cm. Bodies of the crystals are a light blue in color and capped by a pleasant pink tone. Basil contact on crystals. No damage. Great looking bi-colored tourmaline. 500$
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OKD-363 Tourmaline Virgen De Santa Rosa, Minas Gerias, Brazil. Ex. Nancy Collins Collection. This big grouping of tourmalines is composed primarily of three big crystals which have thousands of tiny, gem and fibrous tourmaline crystals networking between them. The color is an unusual, almost metallic, green color. The terminations on the big crystals are hollow and also filled by fibrous crystals. Minor matrix contact and zero damage. Although it looks delecate it is not and is easy to handle and inspect. 9 x 7 x 5.5 cm overall. A very interesting, large tourmaline. 570$
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OKD-327 Tourmaline Resplendor Mine, Minas Gerais, Brazil. Ex. Nancy Collins Collection. 5.2 cm long by 2 cm wide double terminated bi-colored crystal. Pinicoid and complex terminations, both of which are pink, are well formed. Central zone of crystal is a fine deep, transparent green with typical inclusions. Another excellent specimen that is damage free and displays wonderfully. 625$
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OKD-322 Tourmaline Cruzeeiro Mine, Sao Jose de Safira, Minas Gerais, Brazil. Ex. Nancy Collins Collection. Fine pencil, bi-colored tourmaline. This piece is 7..2 cm long with pink composing the outer layer of the crystal and the upper 40 % of its length. The lower section has a well formed phantom of green and this makes up the remaining 60% of the crystal. Pinicoidal termination has very tiny ding visible with magnification but not noticeable to the naked eye. Nicely transparent (much more so than the photo indicates). A high quality piece which receives high points for aesthetics. 590$
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OKD-323 Tourmaline Minas Gerais, Brazil. Ex. Nancy Collins Collection. Nice large 8.9 cm long and 4.5 cm wide crystal with a highly unusual color. Outer rind is very light green which allows you to see to into a deeper green core. This layering gives the piece an almost metallic effect. The upper termination is a pinicoids of very low luster and rough appearance. The lower end of the specimen is very fibrous. The back of the piece is very complex with a number of cavernous areas and fibrous growth. The main body of the piece is composed of several large parallel growth crystals. Both ends of the piece have a darker cap. Damage free. A very interesting and certainly substantial specimen. 950$
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OKD-130 Topaz Minas Gerais, Brazil. Light blue alluvial topaz crystal which has water worn frosting on all sides but one. Faces are clearly evident. The one clear face shows this to be a gem crystal with moderate internal fracturing. 3 x 3 x 2.5 cm crystal. 38$
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OKD-131 Topaz Minas Gerais, Brazil. 24.6 gram, clear gem crystal with a few minor internal inclusions. Chip on top and back is poor. Excellent form and nice from front. 2.5 x 2.5 x 2.2 cm. 38$
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OKD-126 Uvite and Magnesite Brumado, Bahia. Ex. Carlo Barbosa material. Really nice damage free, double terminated, translucent crystal with gemmy sections. Base has a crystal contact that wont show from any view because the specimen sits on it. One area has minor skeletal growth. Very nice piece. 95$
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OKD-285 Spodumene Minas Gerais, Brazil. This etched crystal of spodumene is a real winner: nice yellow color, good double termination, excellent gemmy clarity and some good heft. It measures 11 cm long, 3.7 cm wide and 2.3 cm thick. A fine value on an aesthetic crystal, an exceptional value if used as gem rough. 165$
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OKD-027 Aquamarine North Rio Prov., Brazil 4.7 long by 2.6 cm wide and 1.4 cm thick. Nice crystal with a complex termination. Contact on backside. Quite gemmy down the “C” axis but otherwise lots of inclusions. Not quite as deep a blue as the photo indicates. 90$
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OKB-534 Elbaite on Quartz Pseudomorph of Tourmaline Aruba Mine, Minas Gerais, Brazil. These specimens began as tourmalines, were replaced by quartz and then coated by elbaite. The cap of this one has no quartz core and is elbaite for almost a cm of its top. This is the nicest I could find out of the 15 specimens purchased. 6.6 cm tall and 2.5 cm thick. Back is not damaged.. crystal is scalloped in form. Several chips on termination but still a great value on a two and 3/4 inch tourmaline. Very impressive. 225$
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OKB-535 Elbaite on Quartz Pseudomorph of Tourmaline Aruba Mine, Minas Gerais, Brazil. These specimens began as tourmalines, were replaced by quartz and then coated by elbaite. The cap of this one has no quartz core and is elbaite for almost a cm of its top. 4.7 cm tall and 1.8 cm thick. A couple areas show the elbaite stripped away and the quartz core visible. 95$
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OKB-536 Elbaite on Quartz Pseudomorph of Tourmaline Aruba Mine, Minas Gerais, Brazil. These specimens began as tourmalines, were replaced by quartz and then coated by elbaite. 5.5 cm tall and 2 cm thick. Very nice form to this one. A couple chips on termination but still an excellent value on a two plus inch tourmaline. Very impressive. 170$
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OKA-418 Dravite Paraiba, Brazil. Approx. 10 brownish black crystals to 2 cm each in mica schist. Minor translucence in spots, but opaque for the most part. Great luster and form. 20$
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OKA-826 Muscovite/ Apatite Jose Pinto Mine, M. G. Brazil. Same as above specimen with the addition of a green apatite crystal ( 2.5 cm). This cluster is 8.5 x 6 cm. 28$
