Bright Brazil Jewels Illuminate The World Cup

Only in the past few decades, Parra Iba's "young generation" has been rapidly developing. gemstone The boundary stood firm, and became king of tourmaline at one stroke. The value of its collection continued to increase and its fame was on the up and up. Parra Iba's origin Brazil is the world's leading jewelry center, and the hot world cup can not cover up the shine of Brazil's treasures.

　 2013 FANCYCD new top Parra Iba eardrop

　 Bright tourmaline has a long history.

　　 Brazil Since ancient times, rich stones and rich mineral resources have attracted a large number of explorers. In 1981, a Brazil gem miner named Heitor Dimas Barbosa did not know where she came from. He believed that the hills of Brazil were buried with unknown jewels. He began digging a hole from an abandoned mine, but it never worked out. He persisted in digging for five years, and finally found the possibility of tourmaline in some caves. Until 1989, in the Mina Da Batalha mine of Sao Jose de Batalha village, Brazil, Bazhou, a very bright crystal was discovered by the prospector - weighing 10.5 grams, copper and manganese content very high, and having very rare bright colors. Unfortunately, Heitor Dimas Barbosa herself was unable to go to the mining area to witness the hole of the original stone because of her illness. The original stone had been sold before he witnessed it. If he could see the glittering of this tourmaline, he would be glad that he had been persistent for many years.

Because of the discovery of Parra Iba, this amazing tourmaline has been named "Parra Iba tourmaline". In the second years of Tucson gem exhibition, the first appearance of the "La La Ba" tourmaline has surged nearly 10 times in just four days. This kind of tourmaline is not easy to excavate, the crystal is very small, the mining risk is very high, and the price has been kept high. The high market price has attracted more and more prospectors to dig for treasure in Parra Iba hill. After a few years, the pit has been dug up and no Parra Iba tourmaline output. Nevertheless, today's jewel lovers will only visit Parra Iba Sean Chu when they go to Brazil, hoping that they will be lucky enough to pick up one or two treasures.

Tourmaline has the value of investment and collection. It has only become popular in China in recent years. In fact, in ancient times, tourmaline was popular among collectors. The term "tourmaline" first appeared in the Qing Dynasty's "Shi Ya". In the later historical documents, it can also find "arsenic selenium, tourmaline, Bess, broken gold" and so on. In the Qing Dynasty, tourmaline was the favorite of Empress Dowager Ci Xi. It is said that in her funeral products, there was a lotus leaf ornament weighing 36, two and 8 yuan, and a pillow made of watermelon tourmaline, which is worth 75 thousands and two silver. In addition, the jewels worn on the cap of one and two products were also tourmaline.

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　 Why is Parra Iba Beseal so expensive?

Premium Parra Iba tourmaline is very rare and its price is close to diamond. At the end of 1989, a gemstone exploration team led by Heitor and Barbosa discovered a blue green tourmaline containing copper elements in the northeast of Brazil. It is very bright in color and shines with neon light. This caused the sensation of the gem circle at that time. In 2000, new beautiful veins of blue-green tourmaline were discovered in Mozambique and Nigeria. In 2007, LMHC (Laboratory Manual Harmonization Committee), a prestigious gem, formally named the tourmaline containing copper elements in Brazil, Mozambique and Nigeria.

According to this view, the producing area is not confined to the province of Brazil, and it can be called the "La La Ba" tourmaline, provided that the tourmaline contains a certain amount of copper. However, some collectors now only recognize the copper tourmaline produced in the Brazil area of prai Yi Ba as the prai Ba tourmaline. However, what embarrass them is: at present, several gem laboratories in the world can not provide the origin judgement of tourmaline. In the existing gemstone certificate, the identification of tourmaline does not distinguish the origin. Therefore, even the Parra Iba tourmaline from Parra Iba is likely to be purchased from other sources.

The output of dozens of carats around the world has to be fragmented. The original tourmaline stone is almost intact. The small pieces of the original stone are often only a few grams. That is why even though the real market is only 0.1 to 0.5 carats, it can still sell sky high prices. Therefore, it is worth celebrating and appreciating that you can see a blue karat Ba tourmaline above 5 karats.

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How to identify Parra Iba

Color and element Parra Iba usually have a bluish green color, a more saturated color and lighter tone. But not all blue green tourmaline is called Parra Iba. Is there a copper element that is Parra Iba? According to the definition of LMHC, the most authoritative identification institution in the world, a blue (electro blue, neon blue, purple blue) containing copper and manganese elements, blue green, green blue or green tourmaline, wherever it is, can be called Parra Iba tourmaline.

Sometimes there are different gemstone materials or gemstones mixed with glass in the electro optical flash market, posing as Parra Iba, but Parra Iba is tourmaline with unique electric light, which can not be simulated by counterfeit products.

Refractometer can be used to measure the refractive index of tourmaline. The refractive index of Parra Iba is between 1.62-1.64 and the birefringence is 0.018. Other optimization methods include heat treatment, dyeing, filling, irradiation and film mulching.

There are many accreditation bodies in the professional accreditation bodies, and the evaluation standards vary. For example, some laboratories believe that only the copper bearing tourmaline produced in the Brazil area of the prai Ba area is the prai Ba tourmaline, and some laboratories believe that only the copper containing tourmaline is the prai Ba tourmaline. The difference between the results and ratings of the same products in different laboratories may be relatively large. At present, the most authoritative coloured gemstone identification agency in the world is the Gubelin Gem Laboratory Swiss ancient Berlin gem laboratory, which has a high reputation for coloured gemstone jewelry with ancient Berlin certificates.

　 How to read the ancient Berlin certificate

For those who do not know much about professional gemstone knowledge, a professional certificate is the most assured guarantee. When buying palaeba tourmaline jewelry, how can you make effective use of the ancient Berlin certificate written in full of words and professional vocabulary?

TIPS:Gubelin Gem Laboratory Swiss ancient Berlin gem Laboratory

One of the most famous gemstone laboratories in the world can be traced back to the early twentieth Century. By 1960s, Christie's and Sotheby's asked for precious gemstones in ancient Berlin. At present, the gemstone Laboratory of ancient Berlin provides gem identification, optimization, testing, diamond grading, pearls analysis and identification as well as identification of very famous gem origin for royal families, famous auction houses, jewelers, jewelry retailers and high-end private customers.

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Cautions for investment in tourmaline

The best quality tourmaline will be first cut into facets, and its price is generally higher than that of plain (tourmaline) tourmaline. But this view is not absolute. The two colors of some tourmaline are very obvious. If they are cut into oval shapes, the colors on both sides of the ellipse will become darker. However, most of the tourmaline after oval grinding will make the pale tourmaline show a special effect of two colors or multicolor.

The size of the investment tourmaline is usually ten karats, with uniform color, good cleanliness, and brightly cut cut tourmaline.

There are few synthetic tourmaline in the market for the treatment of tourmaline, but common color filled tourmaline. This kind of tourmaline can be identified quickly under fluorescent lamp. When it is not fluorescent lamp, it can be observed whether it has obvious grey tone. This kind of tourmaline is commonly found on cambered gemstones, beads and carvings.

Tourmaline's internal stress and thermal expansion if you Investment If the raw stone is not cut, the internal stress and thermal expansion of tourmaline must be taken into account. Tourmaline has high sensitivity to heat, and should pay special attention to temperature control when cutting and embedding jewelry. At the same time, tourmaline is prone to have more residual internal stress. It is necessary to release its internal stress before cutting the raw stone. In particular, we should pay attention to the temperature control in the bonding process.