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A large aquamarine ring. 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
Large 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
Fine Aquamarine ring. A Large Emerald Cut Aquamarine and Diamond Single Stone Ring. Octagonal Aquamarine 16.87 carats. Diamonds 0.08cts.
price: £6,900.00 |
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