CATALOGUE OF GEMS AND PRECIOUS STONES. 



145 



spaces which are each cut into two facets. The base may be flat or 

 the bottom may be cut like the crown, making a double rose or 

 briolette cut. The shape of a rose-cut stone may be circular, oval, 

 or indeed any other that the rough gem may permit. 



TRAr OR STEP CUT. 



In the trap or step cut the facets run longitudinally around the 

 stone from the table to the girdle and from the girdle to the culet. 

 There are usually but two or three sets of step facets from the table 



Fig. 23.— Upper and under sides of trap cut. 



to the girdle, while the number of steps from the girdle to the culet 

 depends upon the thickness and color of the stone. The fashion is 

 best adapted to emeralds and other colored stones. 



STEP BRILLIANT OR MIXED CUT. 



Here the form from culet to girdle is the same as that of the trap 

 cut, while from the girdle to the table the stone is brilliant cut, or 

 the opposite. 



Fig. 24— The step brilliant cut . 

 TABLE CUT. 



The table cut consists simply of a greatly developed table and 

 culet meeting the girdle with beveled edges. Occasionally the 8 

 edge facets are replaced by a border of 16 or more facets. 



Fig. 25.— Top and side views of table cut. 

 CABOCHON CUT. 



The cabochon cut is usually applied to opaque, translucent, deep 

 colored, or chatoyant stones. The double cabochon is usually cut 

 4555—22 12 



