OATALOaiTE OF GEMS. 599 



Coruiidnui, var. gapi»hirf. Moiitaiui. Color, wine yellow. Brilliant tut; sijuare 

 frinlle. Size, 6 hy 5.5 l>y :j mm.; weight, 0.~0 carat. Cat. Nos, 159; 84042. 



Corundum, \ar. sappliire. Montana. Color, bluissh green. Brilliant cut; circular 

 girdle. Size, 5 l)y 5 by 4 mm.; weight, 0.70 carat. Cat. Xos. 160; 84042. 



Coriindiuii, var. sapphire. ^Montana. Color, straw yellow. Brilliant cut; square 

 girdle. Size, 4 by 4 by 2 mm.; weight, 0.26 carat. Cat. Nos. 161; 84042. 



CoriDtdutii, var. sapphire, ilontana. Twenty-one stones selected to show variations 

 in color and varying in weight fi'om 1 to 3.5 carats. Cat. Nos. c. 457; 84478. 

 The Lea Collection; gift of Dr. L. T. Chamberlain. 



Conuidniii, var. sajjphire. Yogo gulch, Fergus County, Montana. Color, royal 

 l)hie. Step-brilliant cut. Weight, 3.5 carats. Cat. Nos. c. 458; 84482. The 

 Lea Collection; gift of Dr. L. T. Chamberlain. 



Coni)i(luiii, var. sapphire. The L'^rals, Siberia. Color, deep blue. Step-brilliant 

 cut; elliptical girdle. Size, 7 by 6 by 4 mm.; weight, 1.16 carats. Cat. Nos. 170; 

 50291 . 



Coriuidniii, var. sapphire. Ceylon. Color, strongly dichroic — c=prussian blue; 

 a=sky blue. Step-brilliant cut; elliptical girdle. Size, 18 by 12 by 15 mm.; 

 weiglit, 28.06 carats. Cat. Nos. 1; 82895. The Lea Collection. 



Corandioii, var. sapphire. Ceylon. Color, lemon yellow. Step-brilliant cut; rec- 

 tangular girdle. Size, 12 by 10 bj' 7 mm.; weight, 7.41 carats. Cat. Nos. 2; 

 82895. The Lea Collection. 



Con(Hf/H?/i, var. sapphire. Ceylon. Color, sea green. Step-brilliant cut; rectangu- 

 lar girdle. Size, 12.5 by 11 by 8.5 mm.; weight, 7.145 carats. Cat. Nos. 3; 

 82895. The Lea Collection. 



Curunduin, var. sapphire. Ceylon. Color, prussiau blue. Step-brilliant cut; ellip- 

 tical girdle. Size, 14 by 10 by 4.5 mm.; weight, 6.434 carats. Cat. Nos. 4; 

 82895. The Lea Collection. 



Corundum, var. sapphire. Ceylon. Color, sky blue. Step-brilliant cut; rectangular 

 girdle. Size, 14 by 10 by 9 mm.; weight, 10.51 carats. Cat. Nos. 5; 82895. The 

 Lea Collection. 



Corundum, var. sapphire. Ceylon. Color, bluish gray. Step-brilliant cut; rectan- 

 gular girdle. Size, 17 by 13.5 by 10 mm.; weight, 21 carats. Cat. Nos. 6; 

 82895. The Lea Collection. 



Corundum, var. sapphire. Ceylon. Color, sky blue. Step-brilliant cut; square 

 girdle. Size, 12 by 13 by 8.5 nnn.; weight, 11.05 carats. Cat. Nos. 7; 82895. 

 The Lea Collection. 



Corundum, var. sapphire. Ceylon. Color, lavender blue. Step-brilliant cut; circu- 

 lar girdle. Size, 10 by 10 by 7 mm.; weight, 5.35 carats. Cat. Nos. 8; 82895. 

 The Lea Collection. 



Corundum, var. sapphire. Ceylon. Color, jiale bluish green. Step-brilliant cut; 

 rectangular girdle. Size, 13 by 10 by 6 mm.; weight, 4.16 carats. Cat. Nos. 9; 

 82895. The Lea Collection. 



Coruiuhon, var. sapphire. Ceylon. Color, smalt blue. Step-brilliant cut; square 

 girdle. Size, 12 by 11 by 6 mm.; weight, 6.76 carats. Cat. Nos. 10; 82895. The 

 Lea Collection. 



Corundum, var. sapphire. Ceylon. Color, violet blue. Step-brilliant cut; elliptical 

 girdle. Size, 13 by 8 by 13 mm. ; weight, 12.89 carats. Cat. Nos. 1 1 ; 82895. The 

 Lea Collection. 



(.'(»•«/('//()/(, var. sapphire. Ceylon. Color, blue. Step-brilliant cut; elliptical girdle. 

 Size, 5 by 4.5 by 3 mm.; weight, 0.57 carats. Cat. Nos. 12; 82895. The Lea Col- 

 lection. 



Corundum, var. sapphire. Ceylon. Color, smalt blue. Step-brilliant cut; elliptical 

 girdle. Size, 11 by 9 by 7 mm.; weight, 5.12 carats. The Lea Collection. 



NAT MUS 1900 il 



