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Child Daddy Shark Costume. For other uses, see Ruby disambiguation. Natural ruby crystals from Winza , Tanzania.
Artificial ruby under a normal light top and under a green laser light bottom. Red light is emitted. Minerals portal.
Archived from the original on March 21, Retrieved March 28, Colored Gemstones. Gemstone Press. Archived from the original on May 2, Archived from the original on January 2, Archived from the original on April 26, Archived from the original on January 13, Modern Jeweler.
Archived from the original on January 31, Archived from the original on December 30, Retrieved December 23, Archived from the original on March 30, Retrieved March 30, Minerals: their constitution and origin.
Cambridge, U. Brunswick House Press. Bangkok, Thailand: Gemlab Inc. Zeitschrift der Deutschen Gemmologischen Gesellschaft in German. While the round brilliant cut is the most common shape for diamonds, rubies are typically shaped based on the formation of the stone rather than as a method of maximizing brilliance and fire.
Rubies are increasingly becoming an alternative to diamonds for engagement rings and other jewelry.
Differences between rubies and diamonds include:. Rubies and sapphires are both varieties of the mineral corundum and share a large amount of the same chemistry.
The key difference between rubies and sapphires is chemistry and color. Rubies contain trace amounts of the element chromium, which gives the stone its red color.
Sapphires may contain several different trace elements that contribute to their color. Just like diamonds , rubies can be created in a lab.
Lab-created rubies tend to be much cheaper than natural rubies. They also tend to be produced without the flaws that are present in natural rubies.
From a chemistry perspective, a lab-created ruby is the same mineral as a natural one, with identical chemical properties to a natural stone.
To others, the lack of flaws may be an advantage. Appearance is subjective, and both lab-created and natural rubies can look beautiful.
Ultimately, the best choice is the one that most closely matches your tastes and budget. Because of their rarity, rubies are often faked. We recommend buying only from a trusted ruby jewelry vendor such as James Allen to avoid buying fake rubies.
To tell a fake ruby from a real one, you can use the following techniques:. Note that a lab-created ruby is not the same as a fake ruby. Lab-created rubies are chemically identical to natural ones, although their appearance may be slightly different upon a very close examination for example, few or unnatural-looking inclusions.
Fake rubies, on the other hand, are typically made from materials such as glass, or from other, cheaper gemstones.
We make this recommendation for several reasons:. In short, everything that works in their favor regarding diamonds is true here as well.
Rubies can command the highest per-carat price of any colored stone. This makes ruby one of the most important gems in the colored stone market.
In its purest form, the mineral corundum is colorless. Ruby is the birthstone for July and the gem for the 15th and 40th anniversaries.
On May 12, , a There are a number of processes used to alter the color, apparent clarity, or improve the durability of gems. Some gemstones have synthetic counterparts that have essentially the same chemical, physical, and optical properties, but are grown by man in a laboratory.
Ruby is used in all forms of jewelry, including bracelets, necklaces, rings, and earrings. It is used both as centerpiece gemstone in pendants and rings, as well as a secondary stone to complement other gemstones such as Diamond s.
Star Ruby is polished as cabochon s, and, if clear, can be extremely valuable. Large Ruby gems are extremely rare and valuable.
Fine colored Ruby with a deep red color and excellent transparency can reach several thousand dollars a carat. Synthetic Rubies are inexpensive and often used as a cheap substitute for natural rubies.
Ruby is the birthstone for July. Occasionally also used to describe synthetic Ruby. Ruby Zoisite has pretty contrast and is used as a minor gemstone, being polished into cabochon s and carved into ornamental figures.
Many deceitful names are given to less valuable red gems in connotation with Ruby. Many of these names are used by unscrupulous dealers to confuse inexperienced buyers.
Generally speaking, any time the word Ruby is used with a prefix except for those outlined above , it is a fake or a less valuable red gemstone.
The red Garnet gemstone Pyrope is particularly vulnerable to be called Ruby with a tacky prefix. Rubies are often heat treated to improve color as well as burn out certain inclusion s.
In recent years, researchers have developed more complex creation processes. These simulate natural formation conditions so closely that colors and even inclusions look extremely natural.
Such stones are difficult for all but the most highly skilled professionals to identify as synthetic. See our articles on identifying synthetic gemstones and identifying inclusions found in synthetic gems for more information.
Like diamonds, rubies have industrial applications, so scientists have manufactured rubies in large quantities and sizes for research purposes.
This ct synthetic ruby was cut from a huge crystal originally grown in the s for laser applications. Rubies have a long history of enhancement.
Unless the seller specifically states the stone is unheated, you should assume that some kind of heat treatment has been used. Usually, high temperature heating and controlled cooling clarify the stones.
This process dissolves silk rutile inclusions and can also improve color tone and saturation. Such treatments can only be detected in stones whose residual inclusions show signs of heat stress.
For more information on ruby enhancements, see our article on corundum treatments. This natural, mined ruby has received both heat and glass filling treatments.
Photo by Gemsphoto. Although Asia has historically been the major producer of ruby gems, there are many other sources including the United States, Australia, and, most recently, Africa.
Origin definitely affects the value of rubies. For more information on rubies from these and other parts of the world, see our article on identifying the origins of rubies and sapphires.
Stones from Myanmar generally command the highest prices. They also have extreme red fluorescence. Platinum pin with diamonds and Myanmar rubies approximately 0.
A fabled deposit known for over 1, years, a mining tract in the Mogok region has been the primary source of gem-quality rubies. The color of Mogok rubies often occurs in rich patches and swirls.
Color zoning can occur occasionally. Mogok rubies hold color in virtually any lighting condition, which contributes to the demand for these gem-quality stones.
The shape of Mogok ruby rough generally yields well-proportioned stones. In the late s, gem-quality rubies began appearing in much more abundance from the Möng Hsu region of Myanmar.
The rubies from Möng Hsu are a rich, fluorescent red and are easily distinguished by their dark core. These gems were often treated at very high temperatures to enhance their color.
Concerns were raised not only regarding heat treatment more generally but also over whether rubies from Möng Hsu should be distinguished from other Myanmar rubies.
Top-grade Sri Lankan reds are virtually indistinguishable from their Mogok brethren, but most tend towards purple or pink. As with Sri Lankan sapphires, color accumulates in large stones.