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When of a carmine-red or pigeon-biood color the gem is called Oriental ruby, and
when deep green (not too dark), Oriental emerald. The coloring material for both
the ruby and emerald is thought (almost certainly) to be chromium oxide.
2
The Cyclopædia of India and of Eastern and Southern Asia, ...
In mineralogy, it is applied to precious stones, the violet oriental amethyst, the
green oriental emerald, the red oriental ruby, the blue oriental sapphire, the
yellow oriental topaz, all variously coloured varieties of corundum. The oriental
amethyst ...
3
Encyclopaedia Britannica: A Dictionary of Arts, Sciences, ...
The Oriental Emerald. — The stone known as emerald consists chemically of
silica, alumina and glucina. Like the ruby, it owes its colour to chromium, but in a
different state of oxidation. As already mentioned, there is another stone which ...
4
A Manual of Precious Stones and Antique Gems
A fine specimen set in a ring, from the Hope collection, is in the Townshend
collection, S.K.M. Oriental Emerald. The oriental emerald is the green variety of
this species, but it lacks the rich hues of the splendid mineral after which it is
named, ...
Hodder Michael Westropp, 1874
Oriental emerald. — The name of yet another gem Green is, as it were, bracketed
with those of the two I have saPPhire- just described, namely: — the " Oriental
emerald," or green sapphire. The colour which is most highly prized in this stone
is ...
6
ENCYCLOPAEDIA BRITANNICA; Or, A DICTIONARY of Arts and ...
The Oriental emerald is of the hardness of the saphire and ruby, and is second
only to the diamond in li'stre and brightness: the American is os the hardness of
the garner, and the European somewhat softer than that, yet considerany harder
...
7
Encyclopaedia Britannica or a Dictionary of Arts and ...
The oriental emerald is of the hardness of the sapphire and ruby, and is second
only to the diamond in lustre and brightness : the American is of the hardness of
the garnet, and the European somewhat softer than that, yet considerably harder
...
8
Diamonds and Precious Stones: their history, value, and ...
THE ORIENTAL EMERALD. The green variety, or Oriental emerald, is the rarest
of all gems, and is scarcely ever seen. In the Whole course of my experience, I
have only met with one specimen. THE YELLOW SAPPHIRE on ORIENTAL
TOPAZ ...
9
Encyclopaedia Londinensis, or, Universal dictionary of arts, ...
That which is called the Oriental emerald, and which difters from the Peruvian not
less in its superior degree of hardness than in the nature of its constituent parts, is
a green variety of the sapphire ; and of this nature probably is the gem of the ...
10
The New and Complete American Encyclopedia: Or, Universal ...
The rough emerald is usually of a very bright and naturally polished surface, and
is ever of a pure and beautiful green, without the admixture of any other colour.
The oriental emerald is of the hardness of the saphire aud ruby, and is second ...
