14 
SALOON. 
Nat. Hist. 
kohlenblende (to which may be referred the 
Kilkenny coal) is a specimen from Kongsberg 
in Norway, with native silver. 
Case 2. The diamond , though combustible, is 
by common consent considered as the first of 
precious stones: among the specimens selected to 
exemplify its crystalline forms, are the primitive 
regular octahedron ; the same with solid angles 
truncated; with edges truncated,forming the pas¬ 
sage into the rhomboidal dodecahedron; varieties 
of the latter, giving rise to the six-sided prismatic 
and the tetrahedral forms; cubes with truncated 
and bevilled edges; various hemitropic crystals 
or macles of diamonds, he. With these are also 
placed specimens of the alluvial rocks in which 
the diamonds occur in the East Indies and in 
Brasil.— Zircon: to which belong the common 
jargon of various colours, and the orange-colour¬ 
ed, considered by some as the true hyacinth , from 
Auvergne, Chili, &c.; also the variety called 
zirconite, from Friedrichsvarn in Norway, im¬ 
bedded in syenite, a rock composed of feldspar 
and hornblende.— Corundum: which compre¬ 
hends the precious stones commonly called ori¬ 
ental gems (the sapphire,ruby,oriental amethyst, 
oriental topaz, oriental emerald), of the crystal¬ 
line forms of which the principal modifications 
are here deposited; and the common or imperfect 
corundum from Bengal, Mysore, China (the dia- 
mant-spath of Werner), Lapland, Piedmont, he. 
■—As appendix to these are added, the Jibrolite 
(bournonite 
