Mineral Specimens with Diamond

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DIMD9 - Black Diamond - SOLD
Sierra Leone
thumbnail, including the color and the sharpness as
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DTN4 - Yellow Diamond - SOLD
South Africa
thumbnail, 0.8 x 0.8 x 0.7 cm
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ex.  Irv Brown

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Yellow Diamond from South Africa [db_pics/pics/dtn4a.jpg]

This transparent, markedly yellow, diamond with excellent luster clearly shows off its octahedral form. It does have some inclusions but this is a large uncut diamond of almost 3 carats (2.93)and i think you could even get a fair-sized stone out of it. As a specimen, though, it is much more rare and desirable !? Rare diamond crystal, at the price, i think, of even a traditional white stone. ex. John Saul Collection

gem7-49 - Yellow Diamond (42.2 carats) - SOLD
Zimbabwe (new find!))
thumbnail, 2 x 1.7 x 1.6 cm
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Yellow Diamond (42.2 carats) from Zimbabwe (new find!)) [db_pics/pics/gem7-49a.jpg]		CLICK HERE FOR LARGER IMAGE:
Yellow Diamond (42.2 carats) from Zimbabwe (new find!)) [db_pics/pics/gem7-49b.jpg]

This hefty, large diamond crystal is not only large and relatively well-crystallized for an octohedron, but it is from a neat new locality ; and has a definite yellow tint to it. This is a BIG specimen for any yellow diamond from anywhere. It is complete all around, although rough on a few non-display faces with stepped ingrowths. Nevertheless, it is relatively equant and symmetrical, and shows off nicely - much better in person!

gem7-52 - Diamond (18.7 carats) - SOLD
Kimberly Mine, South Africa
thumbnail, 1.6 x 1.5 x 1.5 cm (weight 18.7 carats)
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ex.  Bill Pinch
ex.  Smithsonian Institution
ex.  Walt Lidstrom

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Diamond (18.7 carats) from Kimberly Mine, South Africa [db_pics/pics/gem7-52a.jpg]
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Diamond (18.7 carats) from Kimberly Mine, South Africa [db_pics/pics/gem7-52b.jpg]		CLICK HERE FOR LARGER IMAGE:
Diamond (18.7 carats) from Kimberly Mine, South Africa [db_pics/pics/gem7-52c.jpg]

This is one of those few rare diamonds that today can be dated and located to the original KIMBERLY MINE itself, almost certainly dating to the early 1900s and perhaps further. It went to the Smithsonian in a collection prior to WWI, I am told, and then was traded out to dealer Walt Lidstrom in the 1960s. From there, it staye dwith his family in his personal collection of thumbnails and toenails which they kept long after he passed away, selling only a few years ago. Bill Pinch snagged this one immediately, realizing its scientific and historic importance as it had the valid label and documentation therefore to show it as a Kimberly Mine piece and not jsut a diamond from the Kimberly Mining Company's many later mines. I had to trade him a really important ugly black rock , to get this!

J11-13 - Diamond - £ 10974 SOLD
Zambia
thumbnail, 2.2 x 2.1 x 2.0 cm
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Diamond from Zambia [db_pics/new2011/DIAMOND-GHANA-30CTS-JB013-12.jpg]
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Diamond from Zambia [db_pics/new2011/7_19_11a.jpg]		CLICK HERE FOR LARGER IMAGE:
Diamond from Zambia [db_pics/new2011/7_19_11b.jpg]
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Diamond from Zambia [db_pics/new2011/7_19_11c.jpg]		CLICK HERE FOR LARGER IMAGE:
Diamond from Zambia [db_pics/new2011/7_19_11d.jpg]
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Diamond from Zambia [db_pics/new2011/7_19_11e.jpg]		CLICK HERE FOR LARGER IMAGE:
Diamond from Zambia [db_pics/new2011/7_19_11f.jpg]

This large natural diamond is nearly an inch across at widest, tip to tip. It weighs 42.3 carats and has a longest edge of 1.8 cm. The crystal is complete all around on all faces except only on part of one bottom face which is incomplete. The other faces, even though a few show minor growth asymmetries, are all complete and present. The diamond crystal has a distinct color to it that is hard to convey in photos, which i would say has a definite greenish tint to it. This is obviously a very large crystal, and comes from a nice locality. It was purchased long ago by a collector friend of mine while travelling in Africa, from a trustworthy mineral specimen miner from Zambia - but there is no exact locale. Because of both the color and the large, rounded size of it, it looks very distinct from other African specimen diamonds; and it has a great impact eve in a showcase with larger specimens as its shape and gemminess make it immediately recognizable. Comes on a custom pedestal base, for displaying it raised an inch and a half over a lucite square for optimal display effect. Joe Budd photo (atop)

MD-114248 - Diamond - - Archived
Diamantina, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil
small cabinet, 8.1 x 5.3 x 4.8 cm.
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Diamond from Diamantina, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-114248a.jpg]

8.1 x 5.3 x 4.8 cm. A RARE and DESIRABLE Brazilian specimen of a gemmy, 4 mm modified octahedral diamond crystal nestled amongst conglomerate river pebbles from the famous Diamantina River of Minas Gerais. SELDOM are such specimens preserved, for obvious reasons! Ex. Ed Swoboda Collection.

MD-118835 - Diamond - - Archived
Diamantina, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil
small cabinet, 7.4 x 5.3 x 4.0 cm.
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Diamond from Diamantina, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-118835a.jpg]		CLICK HERE FOR LARGER IMAGE:
Diamond from Diamantina, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-118835b.jpg]

7.4 x 5.3 x 4.0 cm. A RARE and DESIRABLE Brazilian specimen of a gemmy and glassy, 5 mm diamond crystal nestled amongst conglomerate river pebbles from the famous Diamantina River of Minas Gerais. SELDOM are such specimens preserved, for obvious reasons! Ex. Ed Swoboda collection. These alluvial diamonds, formed in the deep earth, brought to the surface and then deposited into conglomerates over time, are the reason this region of Brazil was named after an old time diamond rush! VERY RARE in this quality.

MD-119352 - Diamond - - Archived
Makeni, Bombali District, Northern Province, Sierra Leone
thumbnail, 0.6 x 0.5 x 0.5 cm.
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Diamond from Makeni, Bombali District, Northern Province, Sierra Leone [db_pics/mdpics/MD-119352a.jpg]

0.6 x 0.5 x 0.5 cm. A beautifully symmetrical, sharp, gemmy and highly lustrous, 1.3 carat, brown, octahedral diamond crystal from Sierra Leone, Africa. The stepped growth faces are eye-catching.

MD-120539 - Quartz (Var: Herkimer Diamond) - - Archived
Ace of Diamonds Mine, Middleville, Town of Newport, Herkimer Co., New York, USA
thumbnail, 2.9 x 2.1 x 1.6 cm
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Quartz (Var: Herkimer Diamond) from Ace of Diamonds Mine, Middleville, Town of Newport, Herkimer Co., New York, USA [db_pics/mdpics/MD-120539a.jpg]

2.9 x 2.1 x 1.6 cm, 2.7 x 1.8 x 1.5 cm. One of these two Herkimers has trapped a pocket of orangey mineralized water, in which a bubble clearly moves as you turn the crystal around! Both crystals, in fact, contain inclusions of this liquid, which add pretty color to them, as well as inclusions of black bituminous. They are both complete, uncontacted floater crystals, with glassy luster.

MD-121264 - Quartz (Var: Herkimer Diamond) - - Archived
Herkimer Co., New York, USA
small cabinet, 5.5 x 3.4 x 3.4 cm.
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Quartz (Var: Herkimer Diamond) from Herkimer Co., New York, USA [db_pics/mdpics/MD-121264a.jpg]

5.5 x 3.4 x 3.4 cm. These quartzes are sometimes called "Herkimer diamonds" due to their unusual clarity and high luster. They are found in cavities in large, hard boulders at the Herkimer locality. This is a complete floater, with no contacts or damage, terminated on both ends (multiply terminated on one end). It has the bituminous inclusions that you commonly see with these.

MD-121660 - Diamond - - Archived
Diamantina, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil
small cabinet, 9.0 x 8.0 x 6.5 cm.
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Diamond from Diamantina, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-121660a.jpg]		CLICK HERE FOR LARGER IMAGE:
Diamond from Diamantina, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-121660b.jpg]

9.0 x 8.0 x 6.5 cm. A RARE and DESIRABLE Brazilian specimen: a gemmy, glassy and lightly frosted, 5 mm, octahedral diamond crystal nestled amongst conglomerate river pebbles from the famous Diamantina River of Minas Gerais. These alluvial diamonds, deposited into conglomerates over time, are the reason this region of Brazil was named after an old-time diamond rush! Ex. Ed Swoboda collection. He obtained them in Brazil 40-50 years ago.

MD-133908 - Quartz (Var: Herkimer Diamond) - - Archived
Herkimer Co., New York, USA
miniature, 3.8 x 2.3 x 1.3 cm.
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Quartz (Var: Herkimer Diamond) from Herkimer Co., New York, USA [db_pics/mdpics/MD-133908a.jpg]

3.8 x 2.3 x 1.3 cm. A thumber that amply demonstrates why these New York quartzes are called "Herkimer Diamonds". They are just so stunningly limpid and fine, like quartz from very few other localities in the world. One of the crystals in this cluster in particular is truly like a perfect jewel. Most of these are repaired, and this may well be, though it is considered acceptable in the case.

MD-136208 - Quartz (Var: Herkimer Diamond) - - Archived
Herkimer Co., New York, USA
thumbnail, 1.9 x 1.2 x 1.2 cm
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Quartz (Var: Herkimer Diamond) from Herkimer Co., New York, USA [db_pics/mdpics/MD-136208a.jpg]

1.9 x 1.2 x 1.2 cm, 1.9 x 1.2 x 0.8 cm, 1.8 x 0.8 x 0.7 cm, 1.4 x 0.7 x 0.7 cm, 1.4 x 1.2 x 1.2 cm, 1.2 x 0.7 x 0.7 cm, 0.9 x 0.6 x 0.5 cm. A set of 7 superb floater quartz crystals from Herkimer, New York - known as "Herkimer Diamonds" for their incredible gem-like quality, unique in the world. They contain natural inclusions of dark bituminous. These are found by laboriously opening pockets in large, very hard boulders.

MD-146970 - Diamond - - Archived
Democratic Republic of Congo (Zaïre)
thumbnail, 0.7 x 0.7 x 0.7 cm.
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Diamond from Democratic Republic of Congo (Zaïre) [db_pics/mdpics/MD-146970a.jpg]

0.7 x 0.7 x 0.7 cm. A 4.41 carat, sharp, honey-yellow cubic diamond crystal from Congo (Zaire). The crystal is lustrous and is nicely frosted.

MD-154873 - Quartz (Var: Herkimer Diamond) - - Archived
Herkimer Co., New York, USA
cabinet, 13.4 x 9.2 x 7.4 cm.
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Quartz (Var: Herkimer Diamond) from Herkimer Co., New York, USA [db_pics/mdpics/MD-154873a.jpg]

13.4 x 9.2 x 7.4 cm. These quartz crystals are commonly called "Herkimer Diamonds" for their gem-like intensity, the equal of any quartz in the world. Here, from the collection of Ed David, is a pocket of crystals that really do look like a little pile of diamonds -- with a larger, if less intense, crystal in a shallow channel on the periphery of the pocket. The large crystal is around 3 cm, for scale. Matrix specimens are hard to obtain, especially with crystals of any quality. The work required to extract them is enormous!


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Rob Lavinsky, rob@irocks.com

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