QUARTZ. 
159 
533. Rock Crystal. 
Snowdon. 
Presented by Captain R. Roberts. 
534. Rock Crystal. 
Snowdon. 
535. Rock Crystal, attached 
to Carrara marble. 
Carrara, Italy. 
Presented bv Walter Hawkins, F.S.A. 
536. Rock Crystal, enclosing 
Chlorite. 
Alps. 
537. Rock Crystal, enclosing 
Rutile, &c. 
Daupliine. 
538. Rock Crystal, with cor¬ 
roded surface. 
Aberdeenshire. 
- 539. Rock Crystal, polished. 
Aberdeenshire. 
540. Rock Crystal, mass show¬ 
ing conchoidal fracture and pris¬ 
matic play of colours. 
Brazil. 
541. Rock Crystal, or “Peb¬ 
ble,” employed for spectacle lenses. 
(Placed in the case beneath.) 
542. Rock Crystal, sliced for 
lenses, before polishing. 
543. Rock Crystal, cut con¬ 
cave for near sight. 
544. Rock Crystal, cut con¬ 
vex for old sight. 
545. Rock Crystal, cut into a 
prism. 
Presented by R. Hunt, F.R.S. 
546. Rock Crystal, cut as 
brilliants, and known to jewellers 
as “ White stone.” 
547. Rock Crystal, carved 
into a Seal. 
548. String of carved Beads 
of Rock Crystal. 
India. 
549. Rectangular block of Rock 
Crystal. 
China. 
550. Chinese Kylin carved in 
Rock Crystal. 
551 and 552. Chinese Snuff 
'Bottles of Rock Crystal, painted 
on the inside. 
Nos. 549 to 552 presented by Dr. 
Lockhart. 
553. Insect Case composed of 
fragments of Rock Crystal. 
Cataprato, near Ciudad Imperial, 
Minas Geraes, Brazil. 
Presented by W. W. Smyth, F.R.S. 
554. Fire Stone, transparent 
Quartz which has been artificially 
treated and coloured for orna¬ 
mental purposes. 
555. Smoky Quartz, large 
pyramidal crystal, with planes of 
the prism. 
Siberia. 
556. Smoky Quartz, with spe¬ 
cular Iron Ore. 
Cleator Moor, Cumberland. 
557 and 558. Smoky Quartz. 
Snowdon. 
Presented by Capt. R, Roberts. 
559. Smoky Quartz, yellow 
crystal. 
Cairngorm, Inverness-shire. 
560 and 561. Smoky Quartz, 
embedded in Calcite. 
Ireland. 
562. Smoky Quartz, detached 
crystals. 
Ireland. 
563. Smoky Quartz, crystal 
containing liquid in a cavity of 
polygonal form. 
Tintagel Slate Quarries, Cornwall. 
Presented by Ashurst Majendie, F.G.S. 
564 and 564a. Smoky Quartz, 
massive, forming Quartz rock. 
Cairngorm, Inverness-shire. 
565. Morion, black Quartz. 
566. Cairngorm, polished slab 
showing crystalline structure. 
567 and 568. Cairngorms, 
smoky tint, cut and polished. 
569. Cairngorm, rich colour, 
cut and polished. 
570. False Topaz, or Citrine, 
three stones cut and polished. 
