THE CULLINAN DIAMOND. 213 



The Cullinan diamond, as it has been named, after the chairman 

 of the Premier company, is more than three times the Aveight of 

 the hirgest diamond previously known — the famous stone found in 

 1893 at Jagersfontein, in the Orange Eiver Colony, which weighed 

 972 carats. 



EXPLANATION OF PLATES. 



Plate I. 



Fig. 1. The cleavage piano F, which, on account of its favorahle position 

 relative to the eaniora, appears as a brilliantly illuminated surface; the irregu- 

 lar original faces C and D also appear in this view. 



Fig. 2. The crystal resting on the cleavage plane E with the- faces B and !> 

 exposed to view. The sharp bounding edges are formed as follows: At the 

 bottom by E, on the right by A, and on the left by G. 



Plate II. 



Fig. 3. View of the diamond si't up to show the largest cleavage surface E, 

 and the best developed octahedral face A above. The left-band side of this 

 figure consists of the large irregular natural surface B. 



Fig. 4. Comparison of the Cullinan diamond with one of 334 larats. also from 

 the Prenuer mine. On the large stone the cleavage surface II forms the lower 

 left-hand corner, the natural surface C is to the right of II. and at the toj) the 

 cleavage surface F. The markings apparently on F are really at the back and 

 are photographed through the crystal. The face on the extreme left, in per- 

 spective, is the large cleavage surface E. 



