CATALOGUE OF OEMS. 



551 



stone; from the table spring six cquihiteral trianolos, whose apices 

 touch the girdle, and these triangles, In' the prolongation of their 

 points, form a star. 



ROSE CUT. 



The rose cut differs from the brilliant cut in that the crown consists 

 of triangular or star facets, whose apices meet at the point or crown 

 of the rose. The base lines of these star facets form the ))ase lines for 

 a vow of skill facets whose apices touch the girdle, leaving spaces 



b 

 Fig. 20. 



THE ROSE CUT. 



a and h, top and side view; c, side view of a double rose. 



which are each cut into two facets. The base ma}^ be flat or the bot- 

 tom ma}' 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. 



TRAP OR STEP CUT. 



In the trap or step cut the facets run longitudinal!}' 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. 21. 

 UPPER AND UNDER SIDE 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. 

 ^-AT Mus IHOo 88 



