Quarte.
Occidental Topas. Smoky Topaz, or Alençon Diamond. Water Sapphire.
False Emerald. Bohemian or Brazilian Ruby. Hyacinthe of Compostella.
Iris. Aventurine. Opal. Hydrophane. Agate. Chalcedony. Chrysoprase.
Cacholong. Heliotrope. Onyx. Sard. Sardonyx. Sardoine. Sardagate.
Jasper.
Zircon. Garnets. Peridot. Olivine. Jade. Tourmaline. Lapis-lazuli. Malachite. Hematite.
" Some
seek amidst the pebbles of the stream The verdant beryl, or the
diamond's gleam, Or where the bright green jasper meets their view. Or
the clear topaz shows its lighter hue, Or the sweet amethyst which,
serenely bright, Diffuses far and wide its tranquil light."
The
stones of which we are now about to speak fall naturally into two
classes, the first composed almost exclusively of silica, the second
having a comÂposition more complex. The latter class contain a
considerable proportion of silica also, but it is always combined with
one or more substances, the nature of which varies in every stone.
FIRST CLASS. The stones comprised in this class may be
