Diamond

 
Origin: South Africa
Size: 6 mm
Sample owner: W.R. Moorer
 
 

Photo courtesy of: 

Pieter Stemvers, Leusden, Netherlands

email: stemvers@hetnet.nl

 

  
Diamond with matrix
Origin: Meng Yin, Shandong Province, China
Sample size: 4 x 2.5 x 2.5 cm
 
A "rare brazilian ballas" according to the diamond trade - this is a fascinating SPHERICAL diamond with no crystal form, measuring 1.3-1.4 cm in diameter and with a smooth surface. It is entirely translucent. Only a diamond can cut a diamond, because they are the hardest material on earth. Ballas are almost impossible to cut because even other diamonds have serious trouble cutting them. The reason for this is that a diamond usually has a specific grain along which is the easiest way to cut them. Ballas have many grains going all over the place, and are therefore almost impossible to cut and are simply crushed for industrial uses.
Origin: Brazil
Sample size: 1.3-1.4 cm in diameter (13.34 carats)
 
  
Origin: South Africa
Sample size: each approx. 1 cm on edge (17.4 carats total weight)
 
  
Origin: South Africa
Sample size: 1.3 cm on a side (7.22 carats)
 
  
  
Origin: Belgian Congo or Zaire
Sample size: 0.6 x 0.5 x 0.5 cm
 
  
Origin: Katanga, Congo (Zaire)
Ex. M. Dodge collection
Sample size: 1.2 x 1.1 x 1.1 cm
 
Two undamaged, lustrous, macle-twinned diamond crystals.
Origin: South Africa
Ex. Gene Meieran collection
Sample size: 5 mm (left), and 6 mm across (right)
 
Origin: Congo
Sample size: 0.5 x 0.5 x 0.5 cm (largest)
 
  
Origin: South Africa
Sample size: 4 mm on edge
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

        
     
Click on thumbnail for larger images
Origin: Ghana
Owner: Lou Perloff
Microscopic image
 
 
        
        
           
Click on thumbnail for larger images
Origin: West Africa
Owner: Lou Perloff
Microscopic image
 

Photo courtesy of: 

Lou Perloff

Photo-Atlas of Minerals

 

Origin: Argyle, Western Australia, Australia
Sample size: unknown
Sample owner: Steve Sorrell
 

Photo courtesy of: 

Steve Sorrell

Crocoite.com

 

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