Petrologyslides.com ---- MantleRocks.com

Natural Diamond Crystals

On-Line Catalog Page 5

1 2 3 4 5 6 7 8 9 10

Conditions of Sale

Mineralogy samples from the Earth's mantle are some of the rarest and most difficult geologic materials for educators, collectors and the scientific community to acquire. The samples listed are offered on a first-come, first serve basis and guaranteed to be exactly as described. All major credit cards accepted including PayPal. Checks are welcome.
Natural Diamonds from Rare Localities

These are unusual and rare localities. All images were taken of the specimens being offered.

{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Argyle Mine, Western Australia, Australia

Complex octahedrons.

.48ct. 4.7mm x 3.8mm $38.00, # D101-1

.56ct. 5.2mm x 3.9mm $35.00 #D101-2

.51ct. 4.7mm x 3.9mm $42.00 #D101-3

.52ct. 4.8mm x 4.3mm $42.00 #D101-4
  .    
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Argyle Mine, Western Australia, Australia

Octahedron.

.22 ct. 3.5mm x 3.1mm $28.00 #D102-1

.21ct. 3.5mm x 3.1mm $28.00 #D102-2

.22ct. 3.4mm x 3.2mm $28.00 #D102-3

.20ct. 3.4mm x 3.1mm $28.00 #D102-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Orapa Mine, Botswana

Pure white, cubic

.42ct. 3.2mm cube $ 40.00 #D103-1

.44ct. 3.2mm cube $40.00 #D103-2

.46ct. 3.2mm cube $40.00 #D103-3

.44ct. 3.2mm cube $40.00 #D103-4
       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Dudno Region, Lunda Province, Angola

Beautiful 1mm clear, rhombic duodechedral yellow/amber crystals, nice crystal habit.

.14ct. 1mm clear crystal, $28.00 #D104-1

.13ct. 1mm clear crystal, $28.00 #D104-2

.13ct. 1mm clear crystal, $28.00 #D104-3

.15ct.1mm clear crystal, $28.00 #D104-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Transvaal , South Africa

"apparant" tetrahedron crystals. clear, beautiful clarity.

.10ct. 1.5mm, $32.00 #D105-1

.11ct.1.5mm, $32.00 #D105-2

.13ct.1.5mm, $32.00 #D105-3

.16ct. 1.5mm, $32.00 #D105-4
       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Aikhal Mine, (Mirny), Yakutia, Siberia, Russia

Large, cubic, green, symetrical, 4.5mm cubes.

1.30ct. 5mm cube, $120.00 #D106-1

1.09ct. 4.5mm cube, $96.00 #D106-2

1.04ct. 4.5mm cube, $96.00 #D106-3

1.12ct. 4.5mm cube, $96.00 #D106-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Orange Free State, South Africa

Rounded, clear crystals

.30ct. 3.5mm, $38.00 #D107-1

.32ct. 3.5mm, $38.00 #D107-2

.35ct.3.5mm, $38.00 #D107-3

.37ct. 3.5mm, $38.00 #D107-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Kasai Province, Zaire

Nicely formed 2mm cubes. Pale to bright yellow-orange in color.

.20ct. 2mm cube, $32.00, #D108-1

.22ct. 2mm cube, $32.00, #D108-2

.24ct. 2mm cube, $32.00, #D108-3

.26ct. 2mm cube, $32.00, #D108-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Sewa River, Sierra Leone, Africa

Large, rounded duodecahedrons

1.36ct 5mm rounded, $96.00, #D109-1

1.32ct 5mm rounded, $96.00, #D109-2

1.28ct 5mm rounded, $96.00, #D109-3

1.41ct 5mm rounded, $96.00, #D109-4
       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Diamantina, Minas Gerais, Brazil

2mm clear, yellow crystals

.15ct 2mm clear, $32.00 #D110-1

.14ct 2mm clear, $32.00 #D110-2

.16ct 2mm clear, $32.00 #D110-3

.11ct 2mm clear, $32.00 #D110-3
       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Individual diamond localities, Mirny Mine, Eastern Siberia, Russia, Daldyn-Alakit kimberlite field, Sakha Republic, Russia

Superb crystals

.32ct 3.5mm, Mirny Mine, Siberia, Russia $44.00 #D112-1

.38ct 3.8mm, Mirny Mine, Siberia, Russia $44.00 #D112-2

.33ct 3.5mm round, Daldyn-Alakit kimberlite field, Sakha Republic, Russia $46.00 #D112-3

.30ct 3.2mm cube, Daldyn-Alakit kimberlite field, Sakha Republic, Russia $38.00 #D112-4
       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Diavik, Northwest Territorites, Canada

Varying crystal habits, about .8mm each. Priced at 4 diamonds in a set.

Diavik, Northwest Territorites, Canada, about .8mm each. 4 diamond set $48.00 #D113-1

Diavik, Northwest Territorites, Canada, about .8mm each. 4 diamond set $48.00 #D113-1

Diavik, Northwest Territorites, Canada, about .8mm each. 4 diamond set $48.00 #D113-1

Diavik, Northwest Territorites, Canada, about .8mm each. 4 diamond set $48.00 #D113-1

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Golkonda Mines, Krishna district, India

.15ct 2mm average size

.16ct $18.00 #D114-1

.18ct $18.00 #D114-2

.15ct $18.00 #D114-3

.18ct $18.00 #D114-4
       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Bangui Region, Central African Republic

Crystal sections, averaging .25 ct and 3.5mm each.

.24ct $20.00 #D115-1

.25ct $20.00 #D115-2

.27ct $20.00 #D115-3

.26ct $20.00 #D115-4
       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Cape Province, South Africa

Rounded octahedrons, .30ct average and 4mm in size

.33ct $28.00 #D116-1

.35ct $28.00 #D116-2

.33ct $28.00 #D116-3

.37ct $28.00 #D116-4
       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Kollur Mine, Guntur district, India

4mm average size

.23ct $26.00 #D117-1

.25ct $26.00 #D117-2

.25ct $26.00 #D117-3

.27ct $26.00 #D117-4
       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Jericho Diamond Mine, Nunavut territories, Canada

Select 1mm crystals.

$20.00 #D118-1

$20.00 #D118-2

$20.00 #D118-3

$20.00 #D118-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Jericho Diamond Mine, Nunavut territories, Canada

.1ct average , 2.7mm select crystals

$20.00 #D119-1

$20.00 #D119-2

$20.00 #D119-3

.$20.00 #D119-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Williamson Diamond Mine, Tanzania, Africa

Varying crystal habits, about .1mm each. Priced at 4 diamonds in a set.

$28.00 set of 4 #D120-1

$28.00 set of 4 #D120-1

$28.00 set of 4 #D120-1

$28.00 set of 4 #D120-1

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Argyle Mine, Western Australia, Australia

Very large diamond crystals, beautiful shape, color and size, each over a ct in weight.

1.54ct 7.8mm x 5.2mm $132.00 #D121-1

1.45ct 6.1mm x 5.2mm $120.00 #D121-2

1.72ct 6.3mm x 5.8mm $140.00 #D121-3

1.62ct 6.3mm x 5.9mm $130.00 #D121-4
       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Kasai Mine, Kasai Province, Zaire, Africa

1mm yellow cudes

1mm cube $28.00 #D122-1

1mm cube $28.00 #D122-2

1mm cube $28.00 #D122-3

1mm cube $28.00 #D122-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Argyle Mine, Western Australia, Australia

.beautiful, 2mm champange-colored diamond crystals

2mm crystal $32.00 #D123-1

2mm crystal $32.00 #D123-2

2mm crystal $32.00 #D123-3

2.5mm crystal $40.00 #D123-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Argyle Mine, Western Australia, Australia

Amber-colored diamond crystals, 1.5mm on average.

1.5mm amber colored diamond crystal $22.00 #D124-1

1.5mm amber colored diamond crystal $22.00 #D124-2

1.5mm amber colored diamond crystal $22.00 #D124-3

2mm amber colored diamond crystal $28.00 #D124-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Argyle Mine, Western Australia, Australia

.4 diamonds per package, beautiful color mix, each about 1mm in size excellent crystal shapes

$32.00 package of 4 #D125-1

$32.00 package of 4 #D125-2

$32.00 package of 4 #D125-3

$32.00 package of 4 #D125-4
       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Premier Mine, Kimberley, South Africa

Beautiful, clear, 1mm octahedrons.

$30.00 #D126-1

$30.00 #D126-2

$30.00 #D126-3

$30.00 #D126-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Golkonda Mines, Krishna district, India

Large, colorful diamond stones from the world famous Golkonda Mine

.28ct 3.9mm champagne color, $34.00 #D127-1

.53ct 4.1mm, pearl color, $48.00 #D127-2

.82ct 5mm round, pearl luster, $104.00 #D127-3

.91ct 5.1mm, round, platinum/green, $102.00 #D127-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Merlin Diamond Mine, Northern Territory, Australia

Large diamonds from a world famous, gem quality mine.

.58ct, 4.8mm, golden champange color, $72.00 #D128-1

.48ct 3.9mm, golden yellow color, rounded cube, $$52.00 #D128-2

1.32ct 6.3mm white platinum color, octahedral, a very large diamond, $96.00 #D128-3

.34ct, 4.5mm, yellow, pearl luster, $48.00.#D128-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Premier Mine, Kimberley, South Africa

Exquisite diamond crystals from the world famous DeBeer's Premier Mine (Cullinan Diamond Mine)

.48ct 4mm, creme-white color, $42.00 .#D129-1

.38ct 4.1mm , pure white color, $54.00 .#D129-2

.84ct, 5.1mm, platinum luster $110.00 #D129-3

1.70ct 5.9mm, spectacular rounded, twinned cube, creme/yellow color, very large diamond, $212.00 #D129-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Carbonado Diamonds

Exotic Black Diamonds from Space. Read additional information below.

1.85ct 7.7mm, $365.00 #D130-1

1.35ct 6.8mm, $270.00 #D130-2

2.10ct 8.4mm, $410.00 #D130-3

.90ct 6.2mm, $180.00 #D130-4

       
{short description of image} {short description of image} {short description of image} {short description of image}

Natural Diamond Crystal

Carbonado Diamonds

Exotic Black Diamonds from Space. Read additional information below.

2.35ct 8.1mm $470.00 #D130-5

1.90ct 7.6mm, $370.00, #D130-6

1.35ct 7.4mm, $270.00 #D130-7

.75ct 6.4mm, $145.00 #D130-8
       
 

Carbonado Diamonds, Research Data

 
Carbonado or "black" diamonds, are exotic diamonds found in Brazil and the Central African Republic. They are unusual for being the color of charcoal, sometimes having a frothy texture. These diamonds can also have a face that looks like melted glass. A research team led by Dr. Stephen Haggerty of Florida International University in Miami has presented a new study that these "stones" were brought to Earth by an asteroid billions of years ago. The findings were published online in the journal "Astrophysical Journal Letters" on December 20, 2006.

The scientists exposed polished pieces of these stones, now known as carbonado diamonds, to extremely intense infrared light. The test revealed the presence of many hydrogen-carbon bonds, indicating that the diamonds probably formed in a hydrogen-rich environment-such as that found in space. The diamonds also showed strong similarities to tiny nanodiamonds, which are frequently found in meteorites. Astrophysicists have developed theories predicting that nanodiamonds form easily in the stellar explosions called supernovas, which scatter debris through interstellar space. Haggerty's research indicates that the deposits in the Central African Republic and Brazil, came from the impact of a diamond-rich asteroid millions of years ago, when South America and Africa were joined. So even though the two diamond fields are now thousands of miles apart, they're remnants of a single, original deposit. Haggerty estimated that the asteroid must have been about half a mile (one kilometer) in diameter.

The unusual bubbles seen in specimens of carbonados probably came from fizzing gases when the diamonds were forming, Haggerty added. This adds further credence to the extraterrestrial origin theory, since conventional diamonds form under immense pressure deep beneath the Earth's crust, where gas bubbles simply couldn't form. Carbonado diamonds also contain a mineral called osborneite, which has been found only in meteorites and comet dust recovered by the recent Stardust mission. Additionally, adding to the evidence for an extra-terrestrial origin, carbonado diamonds have never been reported among any of the other 600 tons of "conventional" diamonds mined, sorted, graded, traded, cut, and polished in the last century.
 

Ordering

On-Line Catalog Page 5

1 2 3 4 5 6 7 8 9 10
 
HOME  |||  SPECIMENS   |||    THIN SECTIONS   |||   ORDERS  |||   CATALOG