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A Classic Octagon Aquamarine and Diamond Single Stone Ring. A stunning ring composed of a beautiful Emerald Cut aquamarine mounted in a simple 4 claw setting to diamond set shoulders and a plain shank. All set in white. The Aquamarine weighs
16.87cts and
there are 8 diamonds in total weighing 0.08 carats. All set in 18ct White Gold.
Aquamarine (Lat. aqua marinā, "water of the sea") is a gemstone-quality transparent variety of beryl, having a delicate blue or
turquoise
color,
suggestive of the tint of seawater. It's closely related to the gem emerald. Colors vary and yellow beryl, called heliodor; rose pink beryl, morganite; and white beryl, goshenite are known.
Aquamarine is a beryl with a
hexagonal crystal
structure
and a chemical formula of Be3Al2Si6O18, a beryllium aluminium silicate mineral. It has a specific gravity of 2.68 to 2.74 and a Mohs hardness of from 7.5 to 8. Aquamarine typically is on the low end of the
specific
gravity range, normally
at less
than 2.7. The pink variety exhibits a high specific gravity of around 2.8. Refractive indices range around 1.57 to 1.58.
It occurs at most localities which yield ordinary beryl, some of the finest
coming
from
Russia. The gem-gravel
placer deposits
of Sri Lanka contain aquamarine. Clear yellow beryl, such as occurs in Brazil, is sometimes called aquamarine chrysolite. When corundum presents the bluish tint of typical aquamarine, it is
often
termed
Oriental aquamarine.
In
the United States,
aquamarines can be found at the summit of Mt. Antero in the Sawatch Range in central Colorado. In Brazil, there are mines in the states of Minas Gerais, Esp¡rito Santo and Bahia.
Zambia
also
produces
nice aquamarine as well as
Madagascar, Malawi,
Tanzania and Kenya. Much of today's aquamarine is heated to give it a better color blue. The deeper the blue color, the more valuable the gem is considered.
The biggest
aquamarine ever
mined was
found at the city of
Marambaia, Minas Gerais,
Brazil, in 1910. It weighed over 110 kg, and its dimensions were 48.5 cm long and 42 cm in diameter.
Aquamarine is the official state gem of
Colorado.
Aquamarine
(along with
Bloodstone) is the
birthstone associated
with March. It is also the
gemstone for the 19th Anniversary.
People in the Middle Ages thought that aquamarine could magically overcome the effects of poison.
Ancient sailors traveled
with
aquamarine crystals, believing
that it would ensure a
safe passage, and often slept
with the stones under their pillow to ensure sound sleep. They believed the siren's (mermaid) fish-like lower body was made
of aquamarine.
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13350
A Fine Aquamarine ring. An Emerald Cut Aquamarine and Diamond Single Stone Ring. Octagonal Aquamarine 16.87 carats. Diamonds 0.08cts.
price: £5,175.00 |
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