| Beryl
is the mineral and family name for
the well known gemstones, emerald
and aquamarine. Lesser known varieties
include goshenite (colorless), morganite
(pink), Heliodor (yellow) and bixbite
(red).
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| Gemological
Information |
| Color
: |
Green,
blue, pink, yellow, red |
| Refractive
Index: |
1.577(+-.016),
1.583 (+-.017) |
| Chemical
Composition: |
Be3Al2(SiO3)6 |
| Hardness: |
7.5 |
| Density: |
2.67-2.745 |
| Crystal
Group: |
Hexagonal |
| Ocurrence: |
Austria,
Columbia, Brazil, Russia, East Africa,
Australia, Madagascar, South Africa,
Zimbabwe, India, Pakistan, Zambia,
Nigeria, U.S.A., Afghanistan. |
| Beryl
is a silicate mineral in which the
silicate molecule combines with
the metals aluminum and beryllium.
It crystallises in six-sided prisms
which belong to the hexagonal system
The
family name beryl is used to describe
stones which are not distinctly
green enough to be classified as
emeralds or stones where the color
may be borderline between yellow
and green. Stones like these could
be called green beryl or yellow
green beryl. Green beryl can usually
be heated to remove the gre#9999FFen
and improve the blue resulting in
the more valuable variety, aquamarine.
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