The price per carat goes up significantly for ruby as it increases in size. Ruby Quality Factors. The mixture of these untreated and heat-treated rubies show a range of darker and brighter red colors. Intersecting needles of the mineral rutile create a common ruby inclusion called silk. When they are intact, they prove the ruby was not heat-treated at very high temperatures. Photo: John I. Koivula, GIA.
Long mineral inclusions that intersect can create the star effect when stones are cut as cabochons. Rubies are commonly cut into oval and cushion shapes. Rough: Gift of William F. Cut stone: Courtesy: Edward Boehm.
These rubies were all mined in Myanmar formerly known as Burma. The faceted stone weighs Photo: Robert E. Another famous ruby, the Rosser Reeves star ruby resides in Washington DC at the Smithsonian ; a carat star ruby — this is considered to be the largest star Ruby in the work. If faceted Ruby Jewelry is what you like gushing over, the Carmen Lucia Ruby , also at the Smithsonian is a 23 carat ruby set with diamonds in a platinum ring, a gift from Peter Buck, a wealthy businessman in memory of his late wife.
The stone is believed to have been found in Burma in the s. Burma was the main source of rubies for most of history but their distribution is now widespread throughout many parts of Asia, countries such as Tanzania and Mozambique in Africa and large deposits have now been found in Greenland.
The short answer is no! From the Mohs scale of mineral Hardness — Rubies are almost at the top — the only thing that could scratch a Ruby is a Diamond! Trade in rubies began centuries ago; there are references to the Trade in the days of the Silk Road and it could have been as early as BC when the trade first began.
They remained gemstones that were highly prized throughout Asia through the Centuries ad that value has subsequently been recognized throughout the World. In ancient Burma, Warriors believed that Rubies gave them an aura of invincibility on the battlefield. Whatever the reason, be it mystical healing properties or its gorgeous red color, a ruby is a valued addition to any gemstone jewelry collection.
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Hue is where the color falls on the color wheel spectrum. The most basic and recognized colors by the eye are red, green, and blue. Other colors form when looking at intermediary colors between secondary colors like violet. Rubies that are closest to a true red on the color wheel spectrum are the ones that are the most prized in terms of their hue.
The more secondary colors that are mixed into the ruby like purple, blue, or orange, the further the ruby moves away from having a perfect red hue. That being said, while some may consider a perfect red to be desirable, others may prefer the blending of colors or a ruby hue tinted with secondary colors.
Saturation in the intensity of the ruby color. People tend be more attracted to highly saturated colors, meaning a vivid red for rubies. Saturation can also be defined as the richness of the color.
Rubies benefit in that they have a natural fluorescence that makes them appear even more saturated with a glowing red color. A highly saturated ruby has a pure and intense red color. When looking at a ruby if it has low saturation, it is because there are undertones of gray, brown and black within the ruby.
Gems of perfect saturation are rare and therefore more expensive. The tone is the amount of color in a ruby. Too much color and the ruby can appear dark, opaque and lifeless.
Too little color and the ruby can appear, to be flat, glassy and not like the red color you expect. Medium tone is the most desirable for a ruby as it is the best balance of color and allows the sparkle of the ruby to come through. The right balance of tone and saturation is what really makes for a beautiful vivid blue sapphire.
Rubies that have many inclusions are difficult to see through. Common inclusions within rubies are called rutile needles. Rubies can be found in the following countries:. In fact, they only fall behind the diamond, which scores a perfect This bodes well for wearing ruby jewelry every day — thanks to its hardness, you can wear a ruby ring, pendant or a pair of ruby earrings with no need to worry about damaging the stone.
Historically, ruby jewelry has usually been given as anniversary and birthday gifts. Ruby jewelry is also a popular gift for 15th and 40th wedding anniversaries. As we explained in our guide to anniversary rings , gifting a pair of ruby earrings or a ruby eternity ring is a great way to symbolize your love and affection for your partner. Over the last decade, rubies have also become popular as engagement ring center stones.
To see some examples of what a ruby looks like in engagement rings, visit our list of recently purchased rings from our highest-rated retailers. Although some rubies are incredibly valuable and can command very high prices, most rubies are considerably less expensive than diamonds of the same size.
This lower pricing makes a ruby an appealing alternative to a diamond for an engagement ring or other jewelry. For example, this 1. Very high-end rubies can be far more expensive — in some cases, either as expensive or more expensive than diamonds of the same size.
Like diamonds, rubies are assessed using certain quality factors. Of these, the most important, by far, is color. The stronger and more intense the color, the more valuable the ruby. Finally, like with all gemstones, the carat weight of a ruby plays a role in its value, with a larger ruby commanding a higher value than a smaller one.
An exceptionally high-quality ruby that combines rich, natural color with other quality factors is exceptionally rare and often worth an incredible amount.
For example, this stunning As with emeralds , the most important factor when evaluating a ruby is its color. The deeper, and more intense the color, the more desirable the ruby. The best ruby color is typically thought of as a deep, vivid red.
However, rubies can look stunning in other colors, such as pink or brown-red. Hue refers to where the ruby falls in the spectrum of other colors. Each ruby has a primary and secondary color.
The primary color is red, and the secondary color is usually orange, purple or pink. Some rubies mined from specific parts of the world are known to have certain secondary colors, such as rubies from Myanmar, which are known to have a slight purple secondary color. Purple as a secondary color can actually be better in a ruby because it makes the red appear richer.
Color tip: set a purplish red ruby in yellow gold , like they do in Burma. The yellow color will neutralize the blue in the purple, making the ruby appear even more red. This brings us to our last color criterion, saturation. Also, rubies that fluoresce glow in ultraviolet light can have even greater saturation.
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