All Specimens with Neptunite

63 specimens selected...

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3D12 - Neptunite - $ 400
San Benito County, California, USA
miniature, 3.6 x 1.2 x 1 cm
ex.  Marilyn Dodge

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Neptunite - San Benito County, California, USA
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Neptunite - San Benito County, California, USA
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Neptunite - San Benito County, California, USA

A very interesting, very aesthetic, cluster of curved bladed crystals with rough terminations on both ends. The blades have a deep cinnamon-brown color and excellent luster. This is not your average Neptunite, by any means. A very fine and unusual specimen. (NOT a thumbnail)



D05-43 - Neptunite - $ 450 SOLD
San Benito CO., California, USA
thumbnail, 2.8 x 2.3 x 1.7 cm
ex.  Sam Nasser

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Neptunite - San Benito CO., California, USA

SHARP, wonderful neptunite with an exceptional termination, about 2 cm tall and 8 mm wide. This is an exceptional piece, and rare quality for a thumber!



D61 - Joaquinite w/Benitoite & Neptunite - $ 95 SOLD
Gem Mine, San Benito Co., California, USA
miniature, 3.2 x 2.3 x 1.5 cm
ex.  Marilyn Dodge

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Joaquinite w/Benitoite & Neptunite - Gem Mine, San Benito Co., California, USA
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Joaquinite w/Benitoite & Neptunite - Gem Mine, San Benito Co., California, USA
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Joaquinite w/Benitoite & Neptunite - Gem Mine, San Benito Co., California, USA

A nice specimen simply for the good Benitoite and Neptunite, add the two lustrous little Joaquinites (to 1mm), and now you have an excellent representative specimen for the species.



DENV08-24 - Neptunite - $ 1500
Dallas Mine, San Benito County, California, USA
miniature, 3.4 x 2.4 x 1.8 cm

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Neptunite - Dallas Mine, San Benito County, California, USA
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Neptunite - Dallas Mine, San Benito County, California, USA
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Neptunite - Dallas Mine, San Benito County, California, USA

A choice miniature with a sharp, robust, lustrous, textbook-crystal of neptunite, perched on just the right amount of contrasting matrix to make this crystal really leap out in a case. Black, but not ugly...this is the world's only world class locality for the species as far as I am concerned (not to discount the manganoan-red variety, which occurs in smaller xls). Now that the deposit is literally stripmined and gone, no more of this calibre can come from the ground as they did, sporadically, over many past years.



ES53 - Neptunite with Benitoite - $ 1250 SOLD
Gem Mine, San Benito County, California, USA
small cabinet, 7.1 x 5.7 x 1.7 cm
ex.  Ernie Schlichter

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Neptunite with Benitoite - Gem Mine, San Benito County, California, USA
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Neptunite with Benitoite - Gem Mine, San Benito County, California, USA
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Neptunite with Benitoite - Gem Mine, San Benito County, California, USA

This plate of black neptunite and blue benitoite crystals on white natrolite is one of the nicest I have seen in years for its price and size range. The neptunites reach 3 cm in length and are EXTREMELY sharp and lustrous. The largest benitoite measures 1 cm across with good luster and is tha tmost rare thing, a complete triply-terminated crystal perched smak dab on matrix, staring you in the face. Smallish perhaps, but of great quality and some gemminess as well. In addition, there is a rare, tiny 0.5 mm, brown, joaquinite crystal in the right center of the specimen. If the crystals stood more vertically, this would easily be a multi-kilobuck piece.



J12-435 - Neptunite on Natrolite - $ 450 SOLD
Dallas Gem Mine, San Benito Co., California
thumbnail, 2.4 x 2.4 x 1.6 cm
ex.  Ron Pellar

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Neptunite on Natrolite - Dallas Gem Mine, San Benito Co., California
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Neptunite on Natrolite - Dallas Gem Mine, San Benito Co., California
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Neptunite on Natrolite - Dallas Gem Mine, San Benito Co., California

A sharp, extremely well-balanced neptunite thumbnail with the best black neptunite (lustre, sharpness!), perched smartly on stark white natrolite matrix. Now, such pieces are hard to come by in this quality and the deposit is basically exhausted for such things. Ex. Ron Pellar thumbnail collection. Joe Budd photos.



LW104 - Neptunite - $ 300 SOLD
Gem Mine, San Benito County, California, USA
small cabinet, 7.5 x 3 x 1.8 cm
ex.  Martin Lewadny

Sorry, we have no images of this specimen at present.

Very fine and aesthetic plate of lustrous jet-black Neptunites on matrix, with just enough Natrolite for accent. The largest Neptunite is 2.1 cm in size and has a beautiful termination. The smaller crystals are distributed nicely across the plate, and many of those are doubly-terminated! A lovely specimen.



LW94 - Neptunite - $ 450 SOLD
Dallas Gem Mine, San Benito County, California, USA
miniature, 4.4 x 3.4 x 2.7 cm
ex.  Martin Lewadny

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Neptunite - Dallas Gem Mine, San Benito County, California, USA
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Neptunite - Dallas Gem Mine, San Benito County, California, USA
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Neptunite - Dallas Gem Mine, San Benito County, California, USA
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Neptunite - Dallas Gem Mine, San Benito County, California, USA

Stellar pair of Neptunite crystals, in matrix, from what is undoubtedly the world’s premier location for the species. The main crystal, jet-black, superbly lustrous, and doubly-terminated, is an amazing 2.6 cm long. Its companion is also high-quality, if smaller. A top-notch Neptunite.



MCW40 - Genthelvite with Mn-Neptunite - $ 1200 SOLD
Mont St. Hilaire, Quebec, Canada
thumbnail, 2 x 1.3 x 1.2 cm

Sorry, we have no images of this specimen at present.

A remarkable specimen of unusually large Genthelvite crystals to over 1 cm, with rich translucent grass-green color! Unusually attractive display-quality example of this often-earthy and ugly mineral species, PLUS it is of significant size and quality - what better combo is there?!



MCW9 - Mangan-neptunite - $ 550
Mont St. Hilaire, Quebec, Canada
thumbnail, 2.6 x 2.0 x 1.7 cm

Sorry, we have no images of this specimen at present.

A remarkable thumbnail! It is a 2.5 cm tall specimen with a wonderful, deep red 1.3 cm neptunite crystal showing exceptional form. Ex Marcelle and Charles Weber Collection



MD-114267 - Neptunite - - Archived
Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California
miniature, 4.4 x 1.3 x 1.1 cm.

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Neptunite - Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California

4.4 x 1.3 x 1.1 cm. A highly lustrous, rich chocolate-brown neptunite crystal from the now closed Dallas Gem Mine. This pristine, doubly terminated, floater crystal is TWISTED - an uncommon occurrence.



MD-114559 - Neptunite - - Archived
Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California
small cabinet, 6.0 x 3.4 x 3.4 cm.

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Neptunite - Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California

6.0 x 3.4 x 3.4 cm. This neptunite specimen features a single fine crystal dramatically jutting from the natrolite matrix. The crystal is pristine, and the faces are like black glass!



MD-114616 - Neptunite - - Archived
Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California
small cabinet, 7.8 x 7.5 x 3.6 cm.

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Neptunite - Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California

7.8 x 7.5 x 3.6 cm. Glassy and fine neptunites crystals to 2.2 cm, isolated on starkly contrasting natrolite, the matrix typical for these and benitoites this locality is famous for.



MD-122903 - Benitoite, Neptunite - - Archived
Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California
small cabinet, 7.5 x 3.9 x 2.8 cm.

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Benitoite, Neptunite - Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California
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Benitoite, Neptunite - Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California

7.5 x 3.9 x 2.8 cm. A showy and beautiful plate richly covered with gemmy, indigo-blue benitoite crystals and lustrous, black neptunite crystals - all on a contrasting matrix covered with snow-white natrolite from the famous and now-closed Dallas Gem Mine of California. Some minor damage on periphery, but overall in good shape and with super gemmy xls! The large neptunite is 1.3 cm. There is little likelihood of more material from this famous locality. Ex. James Zigras Collection.



MD-140472 - Neptunite - - Archived
Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California
small cabinet, 6.3 x 4.8 x 2.3 cm.

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Neptunite - Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California
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Neptunite - Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California

6.3 x 4.8 x 2.3 cm. A BEAUTIFUL, mounded plate aesthetically covered with mirror-finish, jet-black neptunite crystals to 3.0 cm on super-contrasting, snow-white natrolite matrix from the famous and now-closed Dallas Gem Mine. The large neptunite is doubly terminated and the only neptunite crystal damage is along the periphery.



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