APPENDIX 7. 

 STATISTICS OF PRODUCTION. 1 



Value of precious stones produced in the United States, 1913-1919. 



1913 



1914 



1915 



1916 



1917 



1918 



1919 



Beryl 



Copper-ore gems 



Corundum 



Diamond 



Feldspar 



Garnet 



Hematite 



Jade 



Opal 



Peridot 



Pyrite 



Quartz 



Rhodonite 



Smithsonite 



Spodumene 



Tnomsonite 



Topaz 



Tourmaline 



Turquoise 



Variscite 



Vesuvianite 



Beryl, copper-ore gems, dia- 

 mond, opal 



Miscellaneous gems 



$1,615 

 2,350 

 238,835 

 6,315 

 1,285 

 4,285 



82,395 



1,280 



61,032 



765 



449 



1,760 



15, 130 

 375 

 50 

 16, 861 

 165 

 50 

 6,520 



300 



1,114 



100 



$1,675 



1,120 



88,214 



608 



368 



4,523 



126 



$2,031 



1,713 

 99, 180 



2,680 

 305 



1,512 



(6) 



$2, 178 



2,857 

 54,204 



4,175 



(") 

 624 



(«) 



736 

 7,630 

 8,075 

 6,105 



152 



(«) 



2,920 



18,838 

 1,050 

 50 

 4,000 

 21 

 1,380 

 7,980 



13,370 

 5,055 

 1,425 



(«) 



2,287 



1,850 



(») 



1,042 



35,724 



85 



(«0 



C) 



( 6 ) 



862 

 10,969 

 11,691 



3,867 



1,535 



(<0 



d 6, 172 



1,838 



455 



2,075 



25,707 



47 



1,005 



50,807 



21,811 



3,140 



(<0 

 (<0 



e 3,457 



805 



m 



28,273 



(«) 



o>) 



(»> 



230 

 12,452 

 14,171 

 2,350 

 2,765 



(<0 

 /5,928 



$1,906 



2,299 

 42,414 



1,910 



(») 



1.277 

 138 



6,304 

 1,018 

 (») 



15,211 

 515 



281 

 (0) 



907 



6,206 



20, 667 



753 



320 



(*) 



9 4,397 



319, 454 



124, 651 



170,431 



217,793 | 131,012 106,523 



(») 



$40, 304 

 («) 



w 



1,630 



(») 



17,632 

 160 



210 

 17,700 

 22, 750 



925 



8,832 

 » 1,620 



111,763 



a Less than 3 producers; figures combined with others to avoid disclosing confidential information. 



b Small production included under " Miscellaneous gems." 



c For value of production in this year, see above. 



d Includes apatite, calamine, chlorastrolite, crocidolite, datolite, fossil coral, Iceland spar, kyanite, lapis 

 lazuli, obsidian, peridot, phenacite, rutile, smithsonite, spodumene (kunzite), staurolite, thomsonite, 

 titanite, and zircon. 



« Includes chlorastrolite, datolite, epidote, fossil coral, hematite, kyanite, lazulite, rhodonite, rutile, 

 sepiohte, serpentine, spodumene, staurolite, and vesuvianite. 



/ Includes andalusite, chlorastrolite, datolite, epidote, feldspar, fossil coral, hematite, Iceland spar, lapis 

 lazuli, obsidian, peridot, phenacite, pyrite, rhodonite, rutile, sepiolite, smithsonite, spodumene, stauro- 

 lite, thomsonite, willemite, and zoisite. 



g Includes andalusite, calamine, chlorastrolite, datolite, epidote, feldspar, fluorite, Iceland spar, lapis 

 lazuli, mariposite, meerschaum, obsidian, phenacite, pyrite, satin spar (gypsum), staurolite, thomsonite, 

 willemite, and zoisite. 



ft Includes chlorastrolite, datolite, feldspar, fossil coral, hematite, jet, lapis lazuli, meerschaum, spinel, 

 spodumene (kunzite), thomsonite, and Iceland spar. 



i From Mineral Resources of the United States, 1919. Pt. 2, 1921. 



215 



