Gia Ruby

The Fiery Red Ruby - Essentially The Most Valuable Gemstone of All

Ab muscles finest, high quality ruby is really rare it may be the earth's most valued gemstone for hundreds of years. Actually, to this day, flawless good quality rubies will be more valuable and rare than high quality colorless diamonds. A 16 carat ruby sold at auction for US$227,301 per carat at Sotheby's in 1988. A 27.37 carat Burmese ruby ring sold for US$4 million at Sotheby's in Geneva in May 1995, or $146,145 per carat. A 32 carat ruby sold for US$144,000 per carat at Sotheby's in 1989. As opposed, eight D-color internally flawless diamonds 50 plus carats were purchased in earlier times 20 years and the largest, a pear-shape of 102 carats, fetched a mere US$125,000 per carat. Top rubies are really rare even world's top gem dealers must incessantly comb through wealthy estate sales and auctions to locate them. Clean bright stones in sizes above five carats are particularly rare.
Ruby could be the gem quality type of the mineral corundum, and one of the very durable minerals which exists, a crystalline kind of aluminum oxide. Corundum includes a hardness of 9 for the Mohs scale and it is quite challenging. Rolling around in its common form, corundum is even used as an abrasive. Colors of Corundum aside from red are called Sapphire. The element Chromium accounts for the red color of this gem, but excessive Chromium can in fact turn corundum bright green in color. Heat treatment is quite normal in ruby gemstones (as is true for all kinds of corundum) and is also accustomed to dissolve "silk" inclusions, which results in an even more transparent, more intensely colored stone. The temperature treatment methods are considered permanent and will not usually diminish the value of the stone.
The favourite method to obtain fine rubies is Burma, that is now called Myanmar. The ruby mines of Myanmar are older than history: stone age and bronze age mining tools have been located within the mining part of Mogok. Rubies through the legendary mines in Mogok often have a pure red colorization, which are often identified as "pigeon's-blood" although that term is a lot more fanciful than a real practical standard from the trade today. Myanmar also produces intense pinkish red rubies that are also vivid and extremely beautiful. A lot of the rubies from Burma have a strong fluorescence when encountered with ultraviolet rays like those who work in sunlight, which layers on extra color. Burma rubies have a trustworthiness of holding their vivid color under all lighting conditions.
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Fine rubies can also be found in Thailand. Thai rubies usually are darker red in tone: a genuine red, tending toward burgundy as an alternative to pink, as Burma rubies do. This may cause them popular in america where consumers generally prefer their rubies to be a darker red instead of a darker pink. Some Thai rubies have black reflections, a phenomenon called extinction, which can make their color look darker than it actually is. But Thai rubies could also possess a rich vivid red that rivals the Burmese in intensity. Sri Lankan rubies can also be very beautiful. Many Sri Lankan stones in many cases are pinkish in hue and many are pastel in tone. Some, however, resemble the vivid pinkish red hues from Burma.
Rubies from Kenya and Tanzania surprised the entire world once they were discovered inside the sixties his or her color rivals earth's best. Unfortunately, the majority of the ruby production from these countries has several inclusions, tiny flaws which diminish transparency. Rubies from your African mines are not transparent enough to facet. However, their fantastic color is displayed to full advantage when cut cabochon style. A few rare clean stones are considered that are high quality.
The most crucial factor in value of a ruby is color. The most notable qualities are as red as you can imagine: a saturated pure spectral hue without any overtones of brown or blue. A powerful pure, red color, uniform color is the most valuable gem. Clarity can be of secondary importance, but a fine colored gem with slight flaws continues to be greatly regarded. Large sizes rubies will be more rare than diamond along with a worth of fine gem ruby increases significantly (more so than other gems) with an increase of weight.
The word red comes from the Latin for ruby, ruber, that's produced by similar words in Persian, Hebrew, and Sanskrit. The concentration of color of a fine ruby is like a glowing coal, by far the most intensely colored substance our ancestors ever saw. It is no wonder they ascribed magical powers to the telltale fires that burned perpetually and never extinguished themselves.
After color, the other factors which influence value of a ruby are clarity, cut, and size. Rubies which can be perfectly transparent, without tiny flaws, tend to be more valuable than these with inclusions which can be visible for the eye. Cut can produce a big difference in how attractive and lively a ruby seems to the attention. A well-cut stone should reflect back light evenly through the surface without having a dark or washed-out area from the center that may be a consequence of a stone that's too deep or shallow. The shape should also be symmetrical where there really should not be any nicks or scratches inside the polish.
Ruby sometimes displays a three-ray, six-point star. These star rubies are decline in an even domed cabochon cut to show the consequence. The star is better visible when illuminated having a single light: it moves across the stone as the light moves. This effect, called asterism, is caused by light reflecting off tiny rutile needles, called "silk," which are oriented over the crystal faces. The need for star rubies and sapphires suffer from certain things: the intensity and attractiveness of our bodies color as well as the strength and sharpness with the star. All six legs should be straight and equally prominent. Star rubies rarely have the combination of a superb translucent or transparent color as well as a sharp prominent star. These gems are valuable and dear.
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