CATALOGUE OF GEMS. 621 



I'la.sina, .^ce (Quartz. 



Porphyry. Sweden. Color, black matrix with red feldspar. Tal)iilar cut; rectan- 

 gular girdle. Cat. NoiJ. b-841; 84222. 



Prase, see (Jnartz. 



Prchulk. Iloxies Quarry, Paterson, N.J. Color, light green. Two gems; cal>ochon 

 cut; each 17 by 6 mm. Cat. Nos. a-632-633; 84174. 



PrehnUe. Hoxies Quarry, Paterson, New Jersey. Color, light green. Cabochon 

 cut. Size, 54 by 14 by 8 mm. Cat. Nos. a-634; 83580. 



Prelinite, var. c-hlorastrolite. Isle Royale, Lake Sui)erior. (Jolor, green, speckled. 

 Cabochon cut; elliptical girdle. Size, 20 by 17 by 4 mm. Cat. Nos. a-635; 

 51136. 



Prelinite, var. c-hlorastrolite. Isle Royale, Lake Superior. Color, green, speckled. 

 Cabochon cut. Average size, 15 by 11 by 5 mm. Cat. Nos. a-636-638; 83330. 

 The Lea Collection. Gift of Dr. L. T. Chamberlain. 



Prehnite, var. chlorastrolite. Isle Royale, Lake Superior. Color, green, speckled. 

 Cabochon cut; elliptical girdle. Size, 12 by 8.5 by 6 mm. Cat. Nos. a-639; 

 50106. 



Prelinite, var. chlorastrolite. Isle Royale, Lake Superior. Color, green, speckled. 

 Cabochon cut; elliptical girdle. Five stones, three of which are small. Two 

 are 14 by 11 by 5 mm. Cat. Nos. a-640-644; 84175. 



Pyrope, see Garnet. 



Pyroxene. South Fork of Yadkin River, Davitlson County, North Carolina. Color, 

 dark green. Polished slab. Cat. Nos. b-861; 13709. Gift of Dr. Edward 

 Palmer. 



Pyro.vene, var. diopside. De Kalb, St. Lawren(;e, County, New York. Color, bottle 

 green. Cabochon cut; elliptical girdle. Size, 18.5 by 13 by 6 mm.; weight, 

 10.42 carats. Cat. Nos. a-571; 46828. 



Pyrcrene, var. diopside. De Kalb, St. Lawrence County, New Y''ork. Color, grass 

 green. Step-brilliant cut; square girdle. Size, 6.5 by 5.5 mm.; weight, 2.16 

 carats. Cat. Nos. a-572; 46828. 



Pryoxene, var. diopside. De Kalb, St. Lawrence County, New Y''ork. Color, green. 

 Step-brilliant cut; rectangular girdle. Size, 8 by 7 by 5 mm.; weight, 1.87 

 carats. Cat. Nos. a-573; 46828. 



Pyro.rene, var. diopside. De Kalb, St. Lawrence County, New York. Color, light 

 green. Bi-illiant cut; rectangular girdle. Size, 7.5 by 6.5 by 5 mm.; weight, 

 .1.52 carats. Cat. Nos. a-574; 84106. 



Pyroxene, var. diopside. Renfrew County, Cana<la. Color, light green. Step-bril- 

 liant cut; rectangular girdle. Size, 7.5 by 7 by 4.5 mm.; weight, 1.68 carats. 

 Cat. Nos. a-575; 82816. The Lea Collection. 



Pyro.rene, var. diopside. Tyrol. Color, pale yellow. Steii-brilliant cut; rectangu- 

 lar girdle. Size, 9 by 7 by 3 mm.; weight, 1.56 carats. Cat. Nos. a-576; 50323. 



Pyroxene, var. diopside. Tyrol. Color, deep green. Step-brilliant cut; rectangu- 

 lar girdle. Size, 7.5 by 6 by 4 mm.; weight, 1.30 carats. Cat. Nos. a-577; 

 50323. 



Pyro.vene, var. diopside. Color, grass green. Step-brilliant cut; rectangular gir- 

 dle. Size, 10.5 by 5 by 2.5 mm.; weight, 1.16 carats. Cat. Nos. a-578; 84107. 



Quartz. Paris, Maine. Color, white, opalescent. Cabochon cut. Size, 44 by 23 by 

 12 mm. Cat. Nos. a-990; 49194. 



Quartz. Fairfax Court-House, Virginia. Color, greenish, banded. Ta))ular cut. 

 Size, 22 by 17 by 5 mm. Cat. Nos. a-994-995; 47847. 



Quartz. Fairfax Court-House, Virginia. Color, greenish, banded. Cabochon cut; 

 elliptical girdle. Cat. Nos. c-421; 48927. Gift of Dr. Robert H. Lamborn. 



Quartz. Silesia. Colorless; opalescent. Two stones; double cabochon cut; circular 

 girdles. Cat. Nos. a-991-992; 50362. 



