The Fiery Red Ruby - The Most Precious Gem of All
The very finest, top quality ruby is indeed rare that it has become earth's most valued gemstone for millennia. In fact, even today, flawless good quality rubies will be more valuable and rare than good 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. On the other hand, eight D-color internally flawless diamonds 50 plus carats were purchased from earlier times 20 years and the largest, a pear-shape of 102 carats, fetched only US$125,000 per carat. Top rubies are extremely rare the world's top gem dealers must incessantly comb through wealthy estate sales and auctions to find them. Clean bright stones in sizes above five carats are particularly rare.
Ruby may be the gem quality form of the mineral corundum, and something of the very durable minerals which exists, a crystalline kind of aluminum oxide. Corundum features a hardness of 9 around the Mohs scale and it is quite challenging. In the common form, corundum is even used as an abrasive. Colors of Corundum aside from red are known as Sapphire. The element Chromium is responsible for the beautiful red colors of the gem, but too much Chromium can certainly turn corundum silpada colored. Heat treatment is quite typical in ruby gemstones (as is true for many forms of corundum) and is also accustomed to dissolve "silk" inclusions, which results in a far more transparent, more intensely colored stone. The heat treatment methods are considered permanent and will not usually detract from the need for the stone.
The most famous way to obtain fine rubies is Burma, which can be now called Myanmar. The ruby mines of Myanmar are more than history: stone age and bronze age mining tools have been found inside the mining division of Mogok. Rubies through the legendary mines in Mogok usually have a pure red color, that is called "pigeon's-blood" although that term is much more fanciful than a real practical standard in the trade today. Myanmar also produces intense pinkish red rubies that are also vivid and extremely beautiful. Lots of the rubies from Burma have a very strong fluorescence when encountered with ultraviolet rays like those involved with sunlight, which layers on extra color. Burma rubies have a trustworthiness of holding their vivid color under all lighting conditions.
Fine rubies can also be seen in Thailand. Thai rubies are generally darker red in tone: a real red, tending toward burgundy as an alternative to pink, as Burma rubies do. This may cause them very popular in the usa where consumers generally prefer their rubies becoming a darker red as opposed to a darker pink. Some Thai rubies have black reflections, a phenomenon called extinction, that make their color look darker of computer is really. But Thai rubies may also use a rich vivid red that rivals the Burmese in intensity. Sri Lankan rubies can even be very beautiful. Many Sri Lankan stones will often be pinkish in hue and lots of are pastel in tone. Some, however, resemble the vivid pinkish red hues from Burma.
Rubies from Kenya and Tanzania surprised the entire world when they were found within the sixties because their color rivals the earth's best. Unfortunately, almost all of the ruby production from these countries has numerous inclusions, tiny flaws which diminish transparency. Rubies in the African mines hardly ever transparent enough to facet. However, their fantastic color is displayed to full advantage when cut cabochon style. A few rare clean stones result which are good quality.
The most important element in the price of a ruby is color. The superior qualities are as red as you can imagine: a saturated pure spectral hue without the overtones of brown or blue. A powerful pure, beautiful red colors, uniform color is among the most valuable gem. Clarity can be of secondary importance, however a fine colored gem with slight flaws is still greatly regarded. Large sizes rubies tend to be more rare than diamond as well as a price of fine gem ruby increases significantly (way more than other gems) with increased weight.
The term red is derived from the Latin for ruby, ruber, that is produced by similar words in Persian, Hebrew, and Sanskrit. The power of shade of a superb ruby is sort of a glowing coal, essentially the most intensely colored substance our ancestors ever saw. It is no surprise they ascribed magical powers about bat roosting fires that burned perpetually and never extinguished themselves.
After color, the opposite factors which influence value of a ruby are clarity, cut, and size. Rubies which are perfectly transparent, without having tiny flaws, will be more valuable than others with inclusions that happen to be visible for the eye. Cut can create a massive difference in how attractive and lively a ruby seems to a person's eye. A well-cut stone should reflect back light evenly through the surface with out a dark or washed-out area from the center that will be a consequence of a stone that is certainly too deep or shallow. The design should also be symmetrical where there shouldn't be any nicks or scratches in the polish.
Ruby sometimes displays a three-ray, six-point star. These star rubies are decline in a smooth domed cabochon cut to show the consequence. The star is the most suitable visible when illuminated which has a single light source: it moves throughout the stone as the light moves. This effect, called asterism, is caused by light reflecting off tiny rutile needles, called "silk," that are oriented down the crystal faces. Value of star rubies and sapphires are influenced by two things: the intensity and attractiveness of your body color along with the strength and sharpness of the star. All six legs ought to be straight and equally prominent. Star rubies rarely have the mixture of a fine translucent or transparent color and a sharp prominent star. These gems are valuable and dear.
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