Mineral Specimens with Amblygonite

  -  9 specimens selected


GEMS-228 - Amblygonite - $ 150
Brazil

thumbnail, 8.9 mm x 7.0 mm ; 1.72 cts
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Amblygonite from Brazil [db_pics/new2012/gems-228a.JPG]Amblygonite from Brazil [db_pics/new2012/gems-228b.JPG]

Amblygonite is a relatively rare stone and is only found from a few localities in top gem material. Clean stones are not often very large, and they are becoming increasingly difficult to find on the market day. This particular stone is a lovely yellow-green color gem that is virtually eye clean with an "Oval" cut. Amblygonite is too soft and brittle for jewelry, but these are not very common today, and would make a nice addition to any rare stone collection.


MD-39032 - Amblygonite - - Archived
Divino das Laranjeiras, Doce valley, Minas Gerais, Southeast Region, Brazil

small cabinet, 5.9 x 3.8 x 1.7 cm
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Amblygonite from Divino das Laranjeiras, Doce valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-39032a.jpg]

A very sharp twinned crysatl of the rare mineral amblygonite, complete all around . MUCH BETTER IN PERSON - it has a pleasing straw yellow color, good lustre, and lots of gemminess to the point where much of the twin is transparent in person. This is one of the sharpest such crysatls that I have seen, and it is perched upon a smalle rcrystal which acts as a natrual pedestal. Again, BETTER IN PERSON! 5.9 x 3.8 x 1.7 cm


MD-43652 - Amblygonite - - Archived
Linópolis, Divino das Laranjeiras, Doce valley, Minas Gerais, Southeast Region, Brazil

miniature, 4.3 x 3.5 x 1.9 cm
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Amblygonite from Linópolis, Divino das Laranjeiras, Doce valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-43652a.jpg]

This is a TRANSPARENT GEM CRYSTAL of this rare phosphate species! Usually, the larger amblygonites from Brazil are roughly formed, with lots of etching an dpoor color and gemminess. This is an exceptional example, of good size, that could fit in any display collection. I have seen only a small handful of such quality. This one is complete all around, 360-degrees, save for one small ding on a minor right edge and a bit of contacting to matrix on the left edge. The upper termination is sharp and amazingly well-formed. It displays wonderfully. This one has slightly more smooth and lustrous surfaces than the piece below. 4.3 x 3.5 x 1.9 cm


MD-43653 - Amblygonite - - Archived
Linópolis, Divino das Laranjeiras, Doce valley, Minas Gerais, Southeast Region, Brazil

small cabinet, 6.3 x 3 x 2.6 cm
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Amblygonite from Linópolis, Divino das Laranjeiras, Doce valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-43653a.jpg]

This is an even larger TRANSPARENT GEM CRYSTAL of this rare phosphate species! Usually, the larger amblygonites from Brazil are roughly formed, with lots of etching and poor color and gemminess. Like the above smaller specimen, this is an exceptional example, of good size, that could fit in any display collection. I have seen only a small handful of such quality. This one is complete all around, 360-degrees. The upper termination is sharp and amazingly well-formed. It displays wonderfully. I saw only these two aberrant specimens at Munich, with a dealer who had brought them in some years ago. Because of its size and volume, the color intensity here is a little deeper than the piece above. 6.3 x 3 x 2.6 cm


MUN05-36 - Amblygonite - SOLD
Linopolis, Livino das Laranjeiras, Minas Gerais, Brazil

miniature, 4.3 x 3.5 x 1.9 cm
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Amblygonite from Linopolis, Livino das Laranjeiras, Minas Gerais, Brazil [db_pics/pics/mun05-36a.jpg]
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Amblygonite from Linopolis, Livino das Laranjeiras, Minas Gerais, Brazil [db_pics/pics/mun05-36b.jpg]

This is a TRANSPARENT GEM CRYSTAL of this rare phosphate species! Usually, the larger amblygonites from Brazil are roughly formed, with lots of etching an dpoor color and gemminess. This is an exceptional example, of good size, that could fit in any display collection. I have seen only a small handful of such quality. This one is complete all around, 360-degrees, save for one small ding on a minor right edge and a bit of contacting to matrix on the left edge. The upper termination is sharp and amazingly well-formed. It displays wonderfully. This one has slightly more smooth and lustrous surfaces than the piece below.


MUN05-37 - Amblygonite - SOLD
Linopolis, Livino das Laranjeiras, Minas Gerais, Brazil

miniature, 6.3 x 3 x 2.6 cm
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Amblygonite from Linopolis, Livino das Laranjeiras, Minas Gerais, Brazil [db_pics/pics/mun05-37a.jpg]
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Amblygonite from Linopolis, Livino das Laranjeiras, Minas Gerais, Brazil [db_pics/pics/mun05-37b.jpg]

This is an even larger TRANSPARENT GEM CRYSTAL of this rare phosphate species! Usually, the larger amblygonites from Brazil are roughly formed, with lots of etching and poor color and gemminess. Like the above smaller specimen, this is an exceptional example, of good size, that could fit in any display collection. I have seen only a small handful of such quality. This one is complete all around, 360-degrees. The upper termination is sharp and amazingly well-formed. It displays wonderfully. I saw only these two aberrant specimens at Munich, with a dealer who had brought them in some years ago. Because of its size and volume, the color intensity here is a little deeper than the piece above.


RLKG10-243 - Amblygonite - $ 180
Brazil

thumbnail, 9.0 mm ; 3.07 carats
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Amblygonite from Brazil [db_pics/new2010/rlkg243a.jpg]Amblygonite from Brazil [db_pics/new2010/rlkg243b.jpg]

Amblygonite is a relatively rare stone and is only found from a few localities in top gem material. Stone like this gem are highly sought after by collectors, and deeply appreciated by those who have experience with rare gems. This particular stone has a light straw-yellow color, and a "Step Cushion" cut. With the naked eye, I cannot see any inclusions in this gem, which is quite impressive for a stone this size. Amblygonite is too soft and brittle for jewelry, but these are not very common today in ANY size. This would make a great addition to any rare stone collection.


RWHIT-17 - Montebrasite - SOLD
Dunton Mine, Newry, Maine, USA

miniature, 3.4 x 3.1 x 1.7 cm
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ex.  Robert Whitmore

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Montebrasite from Dunton Mine, Newry, Maine, USA [db_pics/new09mix/rw17a.jpg]
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Montebrasite from Dunton Mine, Newry, Maine, USA [db_pics/new09mix/rw17b.jpg]
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Montebrasite from Dunton Mine, Newry, Maine, USA [db_pics/new09mix/rw17c.jpg]
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Montebrasite from Dunton Mine, Newry, Maine, USA [db_pics/new09mix/rw17d.jpg]

Collected shortly after the famous blue-green tourmaline pocket, this is yet another abberrant, incredible find for the locality, but one of which I was completely ignorant until now. In 1974, Bob Whitmore collected a small pocket hosting several crystals of Montebrasite, such as this one (it still has pocket clay attached, not yet cleaned stark white with acids). These crystals have to rank as the best for a US locality, and I do not think were superceded until Brazilian material came out some years later. This is the best miniature in the collection, although a shockingly large, equally sharp and well terminated crystal of 12 cm also was present in the collection. That larger one is now in the Smithsonian Collection, so this fine miniature is in good company. According to Dr. Vandall King, these are now classified as Montebrasite , though Whitmore's label from 30 years ago notes it as Amblygonite.


TUC114-066 - Amblygonite (twinned) - $ 7500
Jenipapo district, Itinga, Jequitinhonha valley, Minas Gerais, Brazil

cabinet, 9.8 x 6.2 x 5.3 cm
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Amblygonite (twinned) from Jenipapo district, Itinga, Jequitinhonha valley, Minas Gerais, Brazil [db_pics/new2011/AMBLYGONITE-MG-BRAZIL-10CM-JB066-11.jpg]
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Amblygonite (twinned) from Jenipapo district, Itinga, Jequitinhonha valley, Minas Gerais, Brazil [db_pics/new2011/AMBLYGONITE-MG-BRAZIL-10CM-JB066-27.jpg]
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Amblygonite (twinned) from Jenipapo district, Itinga, Jequitinhonha valley, Minas Gerais, Brazil [db_pics/new2011/AMBLYGONITE-MG-BRAZIL-10CM-JB066-29.jpg]
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Amblygonite (twinned) from Jenipapo district, Itinga, Jequitinhonha valley, Minas Gerais, Brazil [db_pics/new2011/AMBLYGONITE-MG-BRAZIL-10CM-JB066-30.jpg]
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Amblygonite (twinned) from Jenipapo district, Itinga, Jequitinhonha valley, Minas Gerais, Brazil [db_pics/new2011/AMBLYGONITE-MG-BRAZIL-10CM-JB066-31.jpg]

Amblygonite is a rare species in large crystals, occurring at its very best in this locality. This large crystal is a classic fishtail twin, which is unusually symmetric. Many are smaller, and off-balance. The size an dgeometry of this piece make it stand out. It is extremely sharp and complete all around 360 degrees except for only the most trivial edge wear in a few spots. One termination is slightly etched atop its tip, but is complete. Mass is 420 grams, or about 1 pound in weight. This specimen was featured in the exhibition "MINERAL DREAMS: Brazilian Gem treasures" at the Munich show of 2010.Joe Budd Photos



  -  9 specimens selected



Rob Lavinsky, rob@irocks.com

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