CATALOGUE OF GEMS AND PRECIOUS STONES. 39 



Step-brilliant, oval girdle; blue; 0.355 carat; 4 by 3.5 by 2.5 mm. Isaac 



Lea collection No. 122 



Step-brilliant, elliptical girdle; pale blue; 0.34 carat; 4.5 by 3.5 by 2 mm. 



Isaac Lea collection No. 1 28 



Step-brilliant, irregular oval girdle; deep blue; 0.33 carat; 4 by 2.5 by 2 mm. 



Isaac Lea collection No. 1 14 



Step-brilliant, circular girdle; deep blue; 0.325 carat; 3.5 by 3 mm. Isaac 



Lea collection No. 117 



Step-brilliant, various girdles; mostly blue; 18 gems, total weight, 5.135 



carats; average, 3 by 3 by 2 mm No. 136 



SIBERIA (URAL MOUNTAINS). 



Step-brilliant, elliptical girdle; deep blue; 1.189 carats; 7 by by 4 mm No. 170 



UNITED STATES. 

 Montana. 



Brilliant, circular girdle; very pale blue; 3.15 carats; 8 by 5 mm. Isaac 

 Lea collection No. 1011 



Brilliant, circular girdle; very pale blue; 1.73 carats; 7.5 by 2.5 mm. Isaac 

 Lea collection No. 1012 



Brilliant, circular girdle; pale blue; 1.40 carats; 6 by 4 mm. Isaac Lea 

 collection No. 1013 



Brilliant, circular girdle; blue; 1.31 carats; 6 by 4 mm. Isaac Lea collec- 

 tion No. 1014 



Brilliant, square girdle; blue; 1.156 carats; 6 by 5 mm No. 158 



Brilliant, circular girdle; blue; 0.93 carat; 5.5 by 4 mm. Isaac Lea collec- 

 tion No. 1015 



Brilliant, circular girdle; blue; 0.78 carat; 5 by 3 mm. Isaac Lea collec- 

 tion No. 1016 



Brilliant, circular girdle; blue; 0.535 carat; 4.5 by 3 mm. Isaac Lea collec- 

 tion No. 1017 



Brilliant, rectangular girdle; pale blue; 0.36 carat; 4 by 3 by 2.5 mm. 

 Isaac Lea collection No. 1018 



Rock Creek, Granite County: 



Brilliant, circular girdle; three gems, one green-blue, two very pale 

 blue; total weight, 1.265 carats; 4 by 3 mm No. 1024 - 



Yogo Gulch, Fergus County: 



Step-brilliant, elliptical girdle; deep blue; two gems, 1.86 and 1.8 

 carats; 8 by 7 by 5 mm. Isaac Lea collection No. 458 



North Carolina. 

 Corundum Hill, Macon County: 



Step-brilliant, rectangular girdle; dark green-blue; 3.865 carats; 11 by 



8 by 6 mm No. 162 



Step-brilliant, oval girdle; blue; 0.966 carat; 8 by 6 by 3 mm. Gift 



of Clarence S. Bement No. 169 



Step-brilliant, rectangular girdle; deep blue and green; 0.782 carat; 5.5 

 by 4 by 4 mm No. 166 



CORUNDUM, variety SAPPHIRE (ASTER1A). 



CEYLON. 



Polished pebble; blue gray; 100.11 carats; 34 by 27 by 14 mm. Isaac Lea 

 collection No. 30 



Cabochon, circular girdle; blue; 68.77 carats; 24 by 14 mm. Isaac Lea 

 collection. No. 172 



