3,83 cts aigue-marine naturelle coupe ovale bleu IF (Brésil)

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Vendeur: captej2012 ✉️ (874) 100%, Lieu où se trouve: Canyon Country, California, US, Lieu de livraison: WORLDWIDE et de nombreux autres pays, Numéro de l'objet: 283450961554 3,83 cts aigue-marine naturelle coupe ovale bleu IF (Brésil).

3.83 cts Natural Oval-cut Blue IF Aquamarine (Brazil)

New without Tags.  This gem has never been used/placed/set in a setting.  It is utterly undamaged, unmarred and in perfect condition as expected of NWOTags.

I have included an Aquamarine article below for your appreciation and enjoyment.

Summary of Article: " Aquamarine is a blue to green-blue variety of precious beryl. The beryl group of minerals is most famous for chromium-rich, green emerald, which happens to be one of the 'precious four' gems of the world (diamond, sapphire and ruby are the remaining three). Aquamarine is one of the official  birthstones   for those born in March. Aquamarine is exceptionally hard and has an outstanding vitreous (glass-like) luster. It is most famous for its breathtaking sea-blue colors which can range from light to dark-blue. The name 'aquamarine' was derived from an old Latin expression which meant 'seawater'. "   ...   " Like seawater, aquamarine can be light-blue, dark-blue, blue-green and green-blue. The more saturated the color, the higher the value, although almost all aquamarine is typically a lighter blue tone. "   ...   " The intensity of color is one of the most important criteria when evaluating colored gemstones, but unlike other gems, aquamarine is not diminished by lesser color intensity; many people actually prefer the more crystal-clear lighter gemstones over the richer, deeper colors. "   ...   " Aquamarine gemstones are often heat-treated for color enhancement, but many are untreated. Heating at low temperatures will reduce unwanted green and yellowish tones. Darker shades of aquamarine are almost always heated, as well as lower quality stones (Usually at 725-850 F or 400-450 C) in order to enhance the color to be a favorable blue. "

Type:  Natural Aquamarine   (personally confirmed as genuine Natural Aquamarine by digital refractometer (RI=1.594), dichroscope (only slightly dichroic), polariscope (four flashes in 360 degrees), spectroscope, UV short&long-wave light, measured Specific Gravity=2.72) -- captej2012 Color:  Blue Shape:  Oval-cut Dimensions:  12.00mm x 9.80mm x 6.70mm Weight:  3.83 cts Luster:  Very Gorgeous   (unfortunately no photo is able to capture this gem's brilliant dispersion) -- captej2012 Clarity:  IF Hardness:  8.0 rating on the Mohs Scale Treatment:  Not Heated, Not Enhanced, Not Treated Origin:  Brazil

Allison Aquamarine - sitting beside me Alone,

They say you're just a Stone.

 

But if so, Why do I feel you?

Why do I hear you?

 

How Comforting your Presence.

How Close when we Whisper.

 

Is My Need that you're There?

Or Your Need that I am Here?

 

Whichever Be, We have One Another.

Whatever Be, We are One Another.

 

Take you They will,

No Matter If They Do.

 

They Want What We Are.

So Go Yet We Remain.

 

Go Share What We Are.

Whatever Be We Remain.

Author's Note -- Concerned readers, the above was inspired by my study of Schizophrenia and a Touch of Literary Liberty; fortunately, I am not so Afflicted.  I am just having fun writing for an incidental audience -- you.  :-)

We are an eBay eStore enterprise focused on selling mostly Loose Natural Gemstones.  Stay here, look around and learn.  Via eBay Messaging, ask us questions, make an offer, and otherwise discuss your wishes, concerns and hopes.  We pride ourselves as good-spirited folks having fun and doing our best to share the joy of Nature's most beautiful and enduring literal treasure -- Natural Gemstones.  Expect to find us cheerful and trustworthy, and we will expect the same of you.  For us, Negative FeedBack as a means of coercion is never needed and only degrades everyone's enjoyment in what should otherwise be a fun shopping experience.          And finally, please enjoy my work as eBay's First (unofficial) Gemstone Poet.  --  captej2012

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Aquamarine Gemstone Information

About Aquamarine - History and Introduction

Aquamarine is a blue to green-blue variety of precious beryl. The beryl group of minerals is most famous for chromium-rich, green emerald, which happens to be one of the 'precious four' gems of the world (diamond, sapphire and ruby are the remaining three). Aquamarine is one of the official birthstones for those born in March. Aquamarine is exceptionally hard and has an outstanding vitreous (glass-like) luster. It is most famous for its breathtaking sea-blue colors which can range from light to dark-blue. The name 'aquamarine' was derived from an old Latin expression which meant 'seawater'.

Aquamarine and emerald belong to the same family, but they are surprisingly different. Aquamarine and emerald are both beryllium aluminum silicates. While emerald is colored by trace amounts of chromium (and vanadium), aquamarine color is the result of iron impurities within colorless beryl crystal. Aquamarine and emerald have essentially the same specific gravity and refractive index, but emerald tends to be hazy and full of inclusions, whilst aquamarine has excellent transparency and clarity. Aquamarine, and other types of beryl, are quite durable and hard, ranging from 7.5 to 8 on the Mohs scale of mineral hardness. A dark and deeply saturated blue is the most desirable and valuable aquamarine color. Other varieties of beryl include morganite, goshenite, golden beryl (heliodor), green beryl and bixbite.

World-Famous Aquamarine

There have been huge finds of aquamarine weighing several tons that didn't qualify for cutting due to their weak, gray or opaque color. The largest find of gemstone quality aquamarine dates back to 1910 when the "Minas Gerais" mine in Marambaya, Brazil, unearthed a stone of 243 lb (110.5 kg), 18 inches (48.5 cm) long and 15.5 inches in diameter, that was cut into many gemstones with a total weight of more than 100,000 carats.

The 'Dom Pedro', weighing 26 kg and cut in Idar-Oberstein, Germany in 1992 by the gemstone designer Bernd Munsteiner, is the largest single piece of aquamarine to have ever been cut.

Natural Aquamarine Gemstone
Identifying Aquamarine

Aquamarine can typically be identified by its unique sea-blue colors. It is rather hard and has a vitreous luster. Aquamarine stones have excellent clarity and transparency compared to many other similar gems. The intensity of color and the clarity of the stone are the most important criteria when evaluating aquamarine, followed closely by quality of cut. Aquamarine is colored by trace amounts of iron and testing of composition, trace elements and its six-sided crystal structure can easily distinguish it from other blue-green stones.

Aquamarine Origin and Gemstone Sources

The leading producer of aquamarine is Brazil, with many mines spread throughout the country. Other deposits of aquamarine are sourced from Australia, Myanmar (Burma), China, India, Kenya, Madagascar, Mozambique, Namibia, Nigeria, Pakistan, Zambia and Zimbabwe, as well as in several U.S. locations. Karur, India recently has become one of the biggest suppliers of aquamarine.

Buying Aquamarine and Determining Aquamarine Gemstone Value

Aquamarine Color

Like seawater, aquamarine can be light-blue, dark-blue, blue-green and green-blue. The more saturated the color, the higher the value, although almost all aquamarine is typically a lighter blue tone. A deeply saturated blue is the most desirable color, but it is very rare in larger specimens. The intensity of color is one of the most important criteria when evaluating colored gemstones, but unlike other gems, aquamarine is not diminished by lesser color intensity; many people actually prefer the more crystal-clear lighter gemstones over the richer, deeper colors.

Aquamarine Clarity and Luster

Aquamarines of the best quality are eye-clean, transparent gems. Some gems can carry inclusions of long, hollow rods, a trademark of the beryl family. Aligned traces of foreign minerals, a rare feature, cause a cat's eye effect (chatoyancy) or star effect (asterism) with six rays in a vivid sheen. Cat's eye aquamarine usually commands high prices. Six-rayed specimens with asterism or 'star aquamarine' is exceptionally rare and very valuable. Aquamarine has a vitreous (glass-like) luster when cut.

Aquamarine Cut and Shape

Aquamarine is available in both faceted and cabochon cuts. Beryls are particularly well-suited for rectangular or square cuts. The most favored cut for aquamarine is an emerald step-cut. Brilliant cuts with long or rectangular shapes are also very popular. Turbid and chatoyant specimens are cut en cabochon, as well as cat's eye and star aquamarine specimens. Skilled gem cutters can facet any shape imaginable with aquamarine. The most common cuts are traditional shapes such as round, pear, oval and cushion. Fancy cuts are difficult to find in larger sizes. Aquamarine and other types of beryl are sometimes carved into ornamental figures and animal gemstone carvings.

Aquamarine Treatment

Aquamarine gemstones are often heat-treated for color enhancement, but many are untreated. Heating at low temperatures will reduce unwanted green and yellowish tones. Darker shades of aquamarine are almost always heated, as well as lower quality stones (Usually at 725-850 F or 400-450 C) in order to enhance the color to be a favorable blue. Heating at higher temperatures would result in discoloration.

  • Condition: Neuf sans emballage
  • Condition: Aquamarine is a blue to green-blue variety of precious beryl. The beryl group of minerals is most famous for chromium-rich, green emerald, which happens to be one of the 'precious four' gems of the world (diamond, sapphire and ruby are the remaining three). Aquamarine is one of the official birthstones for those born in March. Aquamarine is exceptionally hard and has an outstanding vitreous (glass-like) luster. It is most famous for its breathtaking sea-blue colors which can range from light to dark-blue. The name 'aquamarine' was derived from an old Latin expression which meant 'seawater'." ... "Like seawater, aquamarine can be light-blue, dark-blue, blue-green and green-blue. The more saturated the color, the higher the value, although almost all aquamarine is typically a lighter blue tone." ... "The intensity of color is one of the most important criteria when evaluating colored gemstones, but unlike other gems, aquamarine is not diminished by lesser color intensity.
  • Transparency: IF
  • Total Carat Weight (TCW): 3.83 cts
  • Shape: Oval
  • Length: 12.80mm
  • Country/Region of Manufacture: Brazil
  • Width: 9.80mm
  • Depth: 6.70mm
  • Country of Origin: Brazil
  • Natural/Lab-Created: Natural
  • Color: Blue

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