Diamond

  
 
 
  
Macle twin
Origin: Ghana
Sample size: 7.5 mm on edge, weight: 1.25 carats (top), 6 mm on edge (middle), 1.1 x 1 x 0.4 cm (2.84 carats) (bottom)
 
  
 
  
 
Origin: South Africa
Sample size: 6 mm across, weight: 0.98 carats (top left), 8 mm on edge and approx. 1.1 cm across tip to tip, weight: 5.36 carats (top right), 4.75 mm on edge, weight: 1.09 carats (2nd row), 6 mm on edge, weight: 1.1 carat (bottom)
 
  
 
  
 
  
 
  
 
  
 
  
 
 
  
 
Origin: Argyle mine, Argyle AK-1 lamproite deposit, Western Australia, Australia
Sample size: 7 mm on edge and approx. 1 cm across tip to tip, weight: 3.98 carats (top left), 9.5 mm on edge and 5 mm thick, weight: 4.03 carats (mackle twin, top right), 9 mm on edge and 4 mm thick, weight: 3.10 carats (mackle twin, 2nd row), 7 mm on edge and 1.1 cm tip to tip, weight: 4.8 carats (3rd row), 5 mm on edge and 7 mm tip to tip, weight: 1.85 carats (4th row left), 6 mm on edge and 9 mm tip to tip, weight: 2.4 carats (4th row right), 7 mm on edge and approx. 1 cm tip to tip, weight: 3.86 carats (5th row left), 7 mm across and to 5 mm on edge, weight: 3.58 carats (total), 7 mm on edge, weight: 1.24 carats (6th row),  3-5 mm on edge (7th row), 4-6 mm on edge (8th row), 1 x 0.9 x 0.7 cm (4.75 carats) (bottom)
 
  
Diamond in conglomerate
Origin: Diamantina, Minas Gerais, Brazil
Sample size: 8.9 x 5.6 x 3.6 cm
 
  
 
  
Macle twins
Origin: South Africa
Sample size: 5 x 5 x 1 mm (top left), 4 x 4 x 1 mm (top right), 6 x 5 x1 mm (bottom left), 5 x 5 x 1 mm
(bottom right)
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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