10 Pedras Gemas mais caras do Mundo

10 Most Expensive Gemstones of the World
Gemstone is a form of crystalline mineral came from tectonic activities and geo chemical process for tens of millions years. In the list, we can find pink gemstones, yellow, blue, white crystal, red diamond include with their current market value.
This following gemstone shared same destiny with white, blue, pink and other rare diamonds. Big pocket collectors demanded them and gemstone traders provide them. Finding one of this gemstone is of course requiring hard work and extensive research.

10. Jeremejevite
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Jeremejevite is a rare aluminium borate mineral with variable fluoride and hydroxide ions. Its chemical formula is Al6B5O15(F,OH)3.
It was first described in 1883 for an occurrence on Mt. Soktui, Nerschinsk district, Adun-Chilon Mountains, Siberia. It was named after Russian mineralogist Pavel Vladimirovich Eremeev (Jeremejev, German) (1830–1899).
It occurs as a late hydrothermal phase in granitic pegmatites in association with albite, tourmaline, quartz and rarely gypsum. It has also been reported from the Pamir Mountains of Tajikistan, Namibia and the Eifel district, Germany.

Jeremejevite current market value is estimated US$ $2000/Carat

9. Black Opal
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Opal is an amorphous form of silica , a mineraloid form, not a mineral. 3% to 21% of the total weight is water, but the content is usually between 6% to 10%. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl and basalt. Opal is the national gemstone of Australia, which produces 97% of the world's supply. This includes the production of the state of South Australia, which amounts to around 80% of the world's supply.
Opal's internal structure makes it diffract light; depending on the conditions in which it formed it can take on many colors. Opal ranges from clear through white, gray, red, orange, yellow, green, blue, magenta, rose, pink, slate, olive, brown, and black. Of these hues, the reds against black are the most rare, whereas white and greens are the most common. It varies in optical density from opaque to semi-transparent. For gemstone use, its natural color is often enhanced by placing thin layers of opal on a darker underlying stone, like basalt.

Black Opal has current market value around USD $2,355/Carat


8. Red Beryl Emerald
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Red beryl (also known as "red emerald" or "scarlet emerald") is a red variety of beryl. It was first described in 1904 for an occurrence, its type locality, at Maynard's Claim (Pismire Knolls), Thomas Range, Juab County, Utah. The old synonym "bixbite" is deprecated from the CIBJO, because of the risk of confusion with the mineral bixbyite (also named after the mineralogist Maynard Bixby). The dark red color is attributed to Mn3+ ions.
Red beryl is very rare and has only been reported from a handful of locations including: Wah Wah Mountains, Beaver County, Utah; Paramount Canyon and Round Mountain, Sierra County, New Mexico; and Juab County, Utah. The greatest concentration of gem-grade red beryl comes from the Violet Claim in the Wah Wah Mountains of mid-western Utah, discovered in 1958 by Lamar Hodges, of Fillmore, Utah, while he was prospecting for uranium. Prices for top quality natural red beryl can be as high as $10,000 per carat for faceted stones. Red beryl has been known to be confused with pezzottaite, also known as raspberry beryl or "raspberyl", a gemstone that has been found in Madagascar and now Afghanistan – although cut gems of the two varieties can be distinguished from their difference in refractive index.
Red Beryl Emerald or Red Emerald or Red Berry is popular as the rarest gemstone from the family of beryl in the world. 

The current market value of Red Beryl Emerald is USD $10,000.00/Carat

7. Musgravite
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Musgravite is one of the newest and most rare gemstones in the world. Musgravite is a silicate mineral whose main ingredients are beryllium (Be), magnesium (Mg) and aluminum (Al).
 It was named ‘musgravite’ after the area Musgrave in Australia from where the material was first found in 1967.
The musgravite was later found also in Greenland and Madagascar, but neither of them produces gem quality material.
Two pieces of faceted gem-quality musgravite from Sri Lanka were reported first in 1993.
Musgravite is among the family of taaffeite (Beryllium Magnesium Aluminum Oxide). 

The current market value of the gem is USD $35,000/Carat

6. Grandidierite
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This is a bluish green mineral found primarily in Madagascar.
The first and so far only clean faceted specimen, from Sri Lanka, was originally mistaken for a serendibite and subsequently purchased in May 2000 by Prof. Gübelin from Murray Burford.
Alfred Grandidier found Grandidierite for the first time in Madagascar. He was a French Naturalist and Explorer. Grandidierite has unique character bluish-green color. 

The current value of the gems is USD $50,000/Carat

5. Painite
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Painite is a very rare borate mineral. It was first found in Myanmar by British mineralogist and gem dealer Arthur C.D. Pain in the 1950s. When it was confirmed as a new mineral species, the mineral was named after him.
The chemical makeup of painite contains calcium, zirconium, boron, aluminium and oxygen (CaZrAl9O15(BO3)). The mineral also contains trace amounts of chromium and vanadium. Painite has an orange-red to brownish-red color similar to topaz due to trace amounts of iron. The crystals are naturally hexagonal in shape, and, until late 2004, only two had been cut into faceted gemstones
In the last 6 decades, miners only found and registered 25 Painites. 

Current market value of Painite is USD $50-$60,000/Carat

4. Blue Garnet
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Garnets possess similar physical properties and crystal forms but different chemical compositions. The different species are pyrope, almandine, spessartine, grossular (varieties of which are hessonite or cinnamon-stone and tsavorite), uvarovite and andradite. The garnets make up two solid solution series: pyrope-almandine-spessarite and uvarovite-grossular-andradite.
Blue Garnet composes rich unique mineral called Vanadium. Vanadium turn crystal changes color. In a day, vanadium turns blue garnet become blue-greenish and at night, vanadium turns Blue garnet purple. 

The current value of Blue Garnet is USD $1,500,000/Carat
A 4,2 karat blue garnet hit a record sales $6,800,000 in 2003.

3. Serendibite
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Serendbite is a rare translucent and crystallized mineral. The origin of Serendibite is in Mogok Burma, Sagaing District, and Mandalay Division until Sri Lanka. 

Current market value of Serendibite is USD $1,800,000-$2,000,000/Carat

2. Red Diamonds
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Red Diamond is second most expensive gemstone in the world. The largest red diamond available in collector’s hand is a 5,11 carat red diamond. 

The owner named it Red Shield and it has market value $10,000,000 and beyond Market value USD $2-2.5 Million/Carat

1. Jadeite
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Over USD $3 Million/Carat
Jadeite is a most expensive gemstone in the world. Current value of Jadeite is $3.000.000 for carat. Some explorer had found Jadeite in Guatemala and California. In November 1997, In Hong Kong, 27 pieces of 0.5mm Jadeite hit news highlight after one collector purchased it for $9,300,000.

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