Star ruby
Natural star ruby and sapphire stones are cherished for their unique beauty, traditional significance, and exquisite patterns of light, often found in jewelry pieces such as rings, earrings, necklaces, and pendants. The value of these gemstones is determined by factors including color, clarity, carat weight, and the quality of the asterism (star) that appears within them.
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Star Ruby Stone: Unique Asterism Effect
Star ruby is a fascinating gemstone that showcases a beautiful star effect, known as asterism. This phenomenon is seen in some rubies, where three-point or six-point star patterns become visible on the surface of the stone. These stones are often cut into cabochons, a smooth, polished shape that best reveals the asterism. The star effect is most prominent under a direct light source, where the star seems to move gracefully across the surface as the stone is turned.
The asterism occurs due to the reflection of light off “silk,” which is made up of structurally oriented needle-like inclusions within the crystal. These inclusions increase the value of the gemstone, contrary to the usual scenario where inclusions tend to decrease the value. Occasionally, star rubies may also exhibit color-change properties, which is an extremely rare and sought-after feature. Additionally, some rubies may display chatoyancy, also known as the cat’s eye effect.
What is a Ruby?
A ruby is a precious gemstone, ranging in color from pink to deep blood-red, and is a variety of the mineral corundum, which is made primarily of aluminum oxide. Other variations of corundum are called sapphires, which come in a wide range of colors. Rubies are among the traditional “cardinal gems,” a term used to denote the most valuable gemstones throughout history, including amethyst, sapphire, emerald, and diamonds. The term “ruby” is derived from the Latin word “ruber,” which means red. The vibrant red color of a ruby is due to the presence of the element chromium.
Understanding Star Ruby Price
The price of a star ruby is primarily influenced by its color, followed closely by its clarity, cut, and carat weight. The most highly sought-after rubies are those of a vivid red color, often called “pigeon blood red,” which command a substantial premium compared to rubies of other shades. Clarity is also crucial; however, in the case of star rubies, some inclusions are necessary to produce the desired star effect. A star ruby ring without needle-like inclusions is often a sign that the stone has been treated or is synthetic.
A clear and sharp star effect increases the value significantly. Star rubies are traditionally the birthstone for those born in July and are typically more pinkish compared to garnet. Some rhodolite garnets have a hue similar to that of certain rubies, adding to the complexity of gemstone identification.
Asterism Phenomenon: Star or Cat’s Eye
Gem cutters often decide to shape stones with lower transparency into cabochons, as this brings out their unique optical effects. When light hits the polished, rounded surface of such stones, it can produce a star-like ray effect, called asterism. The most common stars observed have six rays, though some rare stones display four or twelve rays. This occurs when the needle-like inclusions (“silk”) align along more than one axis within the crystal. This alignment creates the visually striking star effect, which is most noticeable under a direct light source, like sunlight or a spotlight.
Star Rubies from Myanmar (Burma)
Star rubies from Myanmar are especially prized for their rich color and strong star effect. Below is a video showcasing untreated star rubies from Myanmar:
Star rubies untreated from Myanmar (Burma)
Star Ruby Meaning and Healing Properties
The following section is based on cultural beliefs and lacks scientific evidence.
Throughout history, star rubies have been associated with power, fortune, and protection. They are often referred to as the “king of gemstones” due to their powerful energy. Many believe that wearing star ruby jewelry can provide strength and help the wearer overcome obstacles. It has been said that the gemstone’s energy can influence its owner, allowing them to tap into greater courage and resilience.
The Famous DeLong Star Ruby
The DeLong Star Ruby is one of the most famous star rubies, weighing 100.32 carats. It was originally discovered in Myanmar during the 1930s and was eventually purchased by Martin Ehrmann, who sold it to Edith Haggin DeLong for $21,400. She then donated it to the American Museum of Natural History in New York City in 1937.
In 1964, the DeLong Star Ruby was stolen in a high-profile jewelry heist by Jack Roland Murphy and his accomplices. Although some of the stolen gems were quickly recovered, the DeLong ruby was not found until a ransom was paid in 1965 by Florida businessman John D. MacArthur. The stone was recovered at a designated drop-off site, a phone booth at a service plaza on the Sunshine State Parkway. The fascinating history of this gemstone only adds to its allure and mystique.
Frequently Asked Questions About Star Rubies
Are star rubies valuable?
Star rubies are among the rarest and most valuable colored gemstones, even surpassing diamonds of comparable size in terms of value. The rarity and beauty of their star effect make them highly sought after by collectors and enthusiasts alike.
How are star rubies formed?
Star rubies are a type of corundum that contains a small amount of chromium, which gives the gemstone its red color. The star effect occurs due to the gemstone’s hexagonal crystal structure, which has three directions of parallel needle-like inclusions. When cut as a cabochon, these inclusions create a three-line or six-ray star pattern, which is visible due to the magnifying effect created by the rounded dome of the cabochon.
Who should wear star ruby rings?
Star ruby rings are often recommended for creative individuals seeking fame and popularity, such as artists, actors, and musicians. The gemstone is also believed to benefit people in government roles, goldsmiths, stockbrokers, and anyone who struggles with persistent health issues.
What color star ruby is most valuable?
The color of a star ruby is the most important factor affecting its value. The finest examples have a pure, vibrant red to slightly purplish-red color. In most markets, rubies with pure red colors command the highest prices, while those with orange or purple overtones are considered less valuable.
How can you tell if a star ruby is real?
Natural star rubies often have an uneven base, and the underside of the stone may appear rough or have dark spots. Synthetic star rubies tend to have a more uniform appearance. To learn more about identifying natural versus synthetic star rubies, please read our article about synthetic star ruby.
Natural Star Ruby for Sale
We create custom jewelry featuring natural star ruby and sapphire stones, including rings, earrings, necklaces, and pendants. If you are interested, please contact us for a quote.
