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What color should a real ruby ​​be?

Often natural gemstones are so beautiful that it is difficult to believe that they are “real”, that is, they did not involve human intervention. This is why many people ask if the Ruby is real. The answer, of course, is that genuine, natural, unheated rubies are very real and absolutely breathtaking! Rubies and colorless diamonds They have been found in nature with their phenomenal red color and natural luster. Although most ruby ​​gemstones have been cut and polished, evolving from a rough state into regal and prestigious jewelry, they are still just as real. However, the lab-grown versions are not the real thing. They are not real because they are not genuine and natural. These stones did not come about through a painstakingly long natural process, but rather were produced in the laboratory using a variety of materials and tools, many of which were only introduced in the last century or so. This is why it is so important to distinguish between a real, natural ruby ​​and its laboratory-grown counterpart.

Natural rubies

Rubies are minerals from the corundum family that formed beneath the earth’s surface over millions of years. Sapphires also belong to the Corundum family. In fact, the color red is the only aspect that separates these two gemstones from each other. Rubies, like sapphires, rank 9th on the Mohs hardness scale, just behind diamonds. This suggests that rubies are quite durable stones and are a fabulous choice for jewelry given their durability. Natural rubies are much more valuable than synthetic rubies and are also much more unique. It may be much more difficult to find one that has a high level of purity and is affordable, but what you get is something remarkable and irreplaceable. A cultured Ruby may look the same to you, and seem like a perfect looking gemstone to you, but that is not what gemstones are. Natural Rubies are real stones, and like diamonds, they are forever. Mozambican ruby ​​and diamond necklace

Real Rubies vs Lab Grown Rubies

Not every ruby ​​you come across will be a real ruby. Although most stones are clearly identifiable, many are still sold as natural when in fact they are grown in a laboratory. To prepare to identify a synthetic impostor, you should know a few things about natural rubies. Firstly, most rubies have some kind of inclusion. A professional can help you determine whether your Ruby is flawless because only one in a billion is perfect, or maybe it was grown in a laboratory and therefore designed to be as perfect and flawless as possible. The only thing that such a ruby ​​can give is an ideal appearance and a low price. The same goes for low prices in general. Rubies are precious stones, and like real diamonds, emeralds and sapphires, they can be quite expensive. A cheap price can be a very good indication that you are holding a fake. The size of the Ruby can also help you know the authenticity of your stone. Large rubies are difficult to obtain and very expensive. If you come across one or more rubies that are inexpensive, chances are they are lab-grown and not real. Unheated natural red ruby Lab-grown rubies have been made to look identical to real rubies, so it can be extremely difficult to tell them apart. The only way to know for sure is to look at the structure of the stone through a microscope. This should be done by a specialist in the field. Another thing that can help protect you from buying a counterfeit is asking for certification. Only genuine, mined rubies receive such documents and can prove their status. The most important thing to do is to identify a seller you can trust. With the widespread use of the Internet, you can always look for reviews from other people. The idea is to feel completely comfortable with your purchase. 8 (800) 201-77-04
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About ruby

Ruby is corundum, the red color of which comes from impurities of chromium, and all other varieties of this mineral are called sapphire. The color range of ruby ​​includes pinkish, purple, orange and brownish-red gemstones depending on the chromium and iron content. Trace mineral content tends to vary depending on the geological formation that produced the ruby, so in later years original geographic adjectives such as Burmese and Thai were sometimes used to describe the color.
To qualify as a ruby, authorities expect the gemstone to have a medium to medium-dark shade of corundum, and stones lighter than that to be pink sapphire -> but there is no general agreement on where exactly the line should be drawn. The stone below is an example of a corundum gemstone, which some call a ruby ​​and some consider more conservative. would use the term pink sapphire. The old saying about dubious stones is: “It depends on whether you are a buyer or a seller” whether it is a ruby ​​or a pink sapphire!

Ruby is hard (9) and durable, making it an excellent gemstone. (Of course, heavily damaged or chipped stone will be less stable.) Stones that are reasonably clean do not require any special precautions for wear or care. Ruby exhibits pleochroism, which means its color changes depending on the direction it is viewed. Gemologists use a simple instrument called a dichroscope to test this property, which can easily distinguish ruby ​​from its natural imitators, such as red spinel, garnet, and also from glass. Most rubies exhibit distinct pleochroic colors of purple-red and orange-red, and the dichroscope shows them side by side for easy comparison.

The overall color can often, but not always, indicate the geographic origin of the stone: Burmese stones tend toward a purplish-red color, while Thai stones appear more brownish-red. Additionally, many rubies will fluoresce in the long or short wave UV range, a property that can often be used to determine the geographic origin of a stone. Burmese rubies often fluoresce so strongly that the effect is noticeable even in sunlight. Such stones literally glow and are admired. Thai and African stones usually lack this property due to their higher iron content. Although Asia has historically been the main producer of ruby ​​gemstones, there are many other sources including the US, Australia and most recently Madagascar.

Lower quality rubies are used in large quantities to make cabochons, beads, carvings and other crafts. Silk, which is so common in corundum, can, if sufficiently abundant and precisely arranged, lead to asterism, which, when properly cut, produces star rubies. Today, there are heating and diffusion processes that can increase the rutile content and improve such gemstones. Fully synthetic star corudas were very popular in the 1950s under the brand name Linde Stars and are still in production. At the pinnacle of beauty and value in the world of rubies are clear cut stones.

Few other gemstones have as much myth, lore and romance surrounding them, with one of the main attractions being the protection against misfortune and ill health that rubies are believed to offer their lucky owners. As the science of gemology developed, it became known that many historically important “rubies”, such as the famous Black Prince’s Ruby from the British Crown Jewels, were in fact other red gemstones, most often red spinel. Ruby is the traditional birthstone for July.


All corundum gemstones, including ruby, have a long history of improvement. Unless the seller specifically states that the stone does not heat up, you should assume that some kind of heat treatment was used. Typically, high-temperature heating and controlled cooling are used to brighten stones, especially by dissolving “silk” (rutile); but it can also improve tone and color saturation. Such treatments can only be found in stones whose residual inclusions or surfaces show signs of heat stress; therefore, completely flawless stones will not give any clues and cannot be positively verified as unheated.

The general consensus at the present time seems to be that simple heating, indistinguishable from Nature’s own heating processes and stable, is acceptable: as long as it opens up. For this reason, this improvement does not radically reduce the value of rubies. The situation is different with gemstones treated with traditional dyeing (red ruby ​​oil) or other more recently invented processing methods such as surface or lattice diffusion or glass filling. With the possible exception of some of the latest propagation processes, routine gemological tests can detect the cure.

Synthetic and grown rubies

Corundum was first synthesized in the early 1900s by a simple flame melting process. Many jewelers and gemologists have faced the unpleasant task of telling a proud heir that grandma’s precious ruby ​​ring or brooch contains a synthetic flame alloy and has much more sentimental than commercial value. These stones are the easiest to identify and the cheapest to produce. Such stones often show diagnostic growth features called “curved bands” that have never been found in natural gemstones. In recent years, more complex processes have been developed, such as flux fusion and hydrothermal synthesis. They imitate natural formation conditions so closely that the colors and even inclusions appear extremely natural, and such stones are difficult to identify as artificial except by the most highly trained professionals. Fortunately, there are several diagnostic inclusions, such as “fingerprints” that identify a gemstone as a natural ruby, and others that can provide evidence for or against heating in many cases.

Ruby simulants are many and varied, including natural gemstones such as red spinel, rubellite tourmaline and garnet, as well as man-made or enhanced materials such as glass and colored quartz. Historically, various collected stones were also used, such as garnet and glass doublets.


Rubies are the most valuable members of the corundum family. Large gem quality rubies can be more valuable than comparable sized diamonds and are certainly less common. Small gem-quality rubies are rarer than comparable blue sapphires or other colored sapphires, so even the smallest rubies have a relatively high value. The value of many gemstones increases exponentially with increasing carat size, and this is especially true for ruby ​​gemstones. Of course, there are a huge number of lower quality rubies available in the market at reasonable or lower prices.
Stones of Burmese origin usually fetch the highest prices. Strong color saturation, eye clarity or better clarity, and strong fluorescence drive prices up sharply. The vast majority of rubies are “locally cut” in their country of origin. Many locally cut stones have windows and poor proportions, which detracts from their brilliance and appearance. (However, such a cut is usually not a sign of a lack of skill on the part of the cutters, but rather a sign of the need to preserve the weight of the cut stone, which is usually their highest priority). Expensive ruby ​​raw materials are under strict control and are rarely cut outside the country of origin. Sometimes such natural cut stones are recut to custom sizes, albeit with a loss of weight and diameter. Custom cut and recut stones typically have more carats than natural cuts, and I think they’re “pretty damn well worth it.”


Compound:; aluminum oxide Gloss:; glassy Hardness:; 9 Crystal structure:; trigonal Fracture:; shell Cleavage:; no Density:; 4 Refractive index:; 1,76–1,77 Variance:; 0,018 Birefringence:; 0,008 UV fluorescence:; depends on the origin and/or content of iron, strong to inert, red or orange-red in color

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