Star Ruby: Properties, Benefits & Meanings

Star Ruby collection
Star Ruby collection

Star Ruby Overview

Star Ruby is a type of ruby gemstone distinguished by its ability to show off a unique, iridescent star pattern when faceted properly and viewed under the right light source. Star Rubies usually have extensive chemical coloring, which gives them their signature glimmering effect. Star rubies were once used in royal jewelry and other precious items. Still, Star Rubies are being cut into various shapes and sizes and used for decorative purposes such as pendants, rings, and even sculptures. Star Rubies are loved for their rarity and beauty, making them highly sought-after gems worldwide.

In this post, we’ll dive deep into the world of Star Ruby and discover its properties, benefits, and meanings. From its physical characteristics to its spiritual significance, we’ll cover everything you need to know about this fascinating gemstone.

  • Mineral Class: Ruby
  • Wearability: Good
  • Symbols: Wealth, Passion
  • Color: Red
  • Hardness: 9
  • Birthstone: July

What Is Star Ruby?

Star Ruby is a type of ruby that displays a unique phenomenon known as asterism. A six-rayed star-like effect appears on the surface of the gemstone when it is cut and polished correctly. The asterism is caused by the reflection, refraction, and dispersion of light within the stone, creating a star-like pattern that appears to move as the stone is rotated.

Star Rubies are formed from the mineral corundum, just like other rubies, but with needle-like rutile inclusions that align in a specific direction to create the star effect. Star Rubies can come in various colors, including red, pink, and purple. The most valuable is a deep red hue.

Due to its rarity and beauty, Star Ruby is highly prized by collectors and jewelry enthusiasts. As a result, it is often used in fine jewelry, such as pendants, earrings, and rings, as well as in spiritual and metaphysical practices for its believed properties and meanings.

How is Star Ruby Formed?

Star Rubies are formed from the mineral corundum, just like other rubies. The key difference between a regular ruby and a Star Ruby is the presence of needle-like inclusions of the mineral rutile within the corundum.

These rutile inclusions are elongated, crystal-like structures that grow in a specific orientation within the corundum. When the stone is cut and polished correctly, the rutile inclusions align to create a six-rayed star effect on the stone’s surface.

The formation of Star Rubies is a rare occurrence, and the quality of the asterism depends on the number and orientation of the rutile inclusions and the quality of the cut and polish of the stone. Finding high-quality Star Rubies is a challenging task and one reason why they are highly prized.

Physical Properties

Mineral GroupCorundum
Formula Al2O3
Chemical Name: Aluminum Oxide
Hardness (Mohs scale)9
Refractive Index1.768 – 1.763
FractureConchoidal, Splintery
LusterSubadamantine, Vitreous
Specific Gravity3.97–4.05
TransparencyTransparent, Translucent
Table of Physical Properties
Red ruby crystal
Red ruby crystals


The word “ruby” comes from the Latin word “ruber,” which means red. The word “star” is added to the name to describe the unique star-like effect characteristic of the gemstone.

The term “Star Ruby” has been used for centuries, and the gemstone has been prized and valued for its beauty and rarity since ancient times. Star Rubies have been associated with wealth, power, and love in many cultures. In addition, they have been used in spiritual and mystical practices.

Star Ruby Location on Worldmap
Star Ruby Location on Worldmap

Where is Star Ruby Found?

Here is a list of countries known to produce Star Rubies:

  • Myanmar (Burma)
  • Sri Lanka (Ceylon)
  • Vietnam
  • USA
Closeup view of gemstones including star ruby star sapphire
Closeup view of gemstones including star ruby and star sapphire

Star Ruby Appearance

The appearance of Star Ruby can vary greatly depending on the stone’s quality and the rutile inclusions’ orientation. High-quality Star Rubies display a strong, clear six-rayed star effect on the stone’s surface, with the star appearing to move as the stone is rotated.

The color of Star Ruby can range from light pink to deep red, with the most valuable being a deep red hue. The red color is caused by the presence of chromium within the corundum. The star effect is created by the reflection, refraction, and dispersion of light within the stone caused by the alignment of the rutile inclusions.

In terms of clarity, Star Rubies can be transparent to translucent, with some stones exhibiting inclusions or internal cracks. The stone’s cut can also greatly impact the appearance of the star effect, with a well-cut stone revealing a clear and bright star, while a poorly cut stone may display a weak or blurred star.

Types of Star Ruby

There are two main types of Star Rubies:

  1. Single Star Ruby: This type displays a single star on the stone’s surface, created by the alignment of the rutile inclusions.
  2. Multi-Star Ruby: This type displays multiple stars on the stone’s surface, caused by numerous sets of rutile inclusions. These stones are much rarer than Single Star Rubies and are highly valued for their beauty and rarity.

Star Rubies can be further classified based on the intensity and clarity of the star effect and the color and clarity of the stone. High-quality Star Rubies with a strong, clear star effect and a deep red color are considered the most valuable and sought-after.

Generally, the type of Star Ruby is determined by the presence and alignment of the rutile inclusions, with Single and Multi-Star Rubies being the two main categories. The value and rarity will depend on a combination of factors, including the type, the quality of the star effect, the color and clarity of the stone, and more.


Star Ruby Value and Price

The value and price of a Star Ruby can vary greatly depending on several factors, including:

  1. Carat weight: The weight of the stone, measured in carats, is one of the most significant factors affecting the price. Larger stones are generally more valuable and rarer than smaller stones.
  2. Cut: The cut can greatly impact the appearance of the star effect, with well-cut stones exhibiting a clear and bright star and poorly cut stones displaying a weak or blurred star. A well-cut stone will be more valuable than a poorly-cut stone.
  3. Clarity: The clarity can range from transparent to translucent, with inclusions and internal cracks potentially affecting the stone’s clarity. The fewer the inclusions and cracks, the more valuable the stone will be.
  4. Color: Color is a significant factor affecting its value, with deep red being the most valuable hue. The intensity of the red color will also impact the stone’s value.
  5. Star Effect: The quality and clarity of the star effect is another key factor affecting the value. High-quality stones with a strong, clear star effect are highly prized and will be more valuable than stones with a weak or blurred star.
  6. Origin: The origin can also impact its value, with certain countries, such as Myanmar (Burma), being known for producing high-quality stones.

Overall, the value and price will depend on a combination of these factors, with high-quality stones exhibiting a strong, clear star effect, a deep red color, and few inclusions and cracks being the most valuable and sought-after.

How Can You Tell if Star Ruby Is Real?

You can perform several tests to determine the authenticity of a Star Ruby. These are:

  1. Visual inspection: A real stone should exhibit a clear and bright star effect, with the star being visible even under low light conditions. The star should also be centered and symmetrical, with a sharp and well-defined pattern. The stone may only be real if the star effect is strong, blurred, or consistent.
  2. Specific gravity test: Star Rubies have a specific gravity of 3.97-4.05, higher than most other gems. You can perform a specific gravity test by using a device called a hydrometer, which measures the density of a liquid or solid. A real stone should have a specific gravity close to 3.97-4.05.
  3. Refractive index test: The refractive index is 1.76-1.78. You can perform a refractive index test by using a refractometer, which measures the speed of light as it passes through a gemstone. A real Star Ruby should have a refractive index close to 1.76-1.78.
  4. Thermal conductivity test: Star Rubies are poor conductors of heat and will not change temperature quickly when heated or cooled. You can perform a thermal conductivity test by using a thermal gem tester, which measures the temperature change of a gemstone when exposed to heat or cold. A real piece should have poor thermal conductivity.
  5. UV light test: Star Rubies fluoresce (emit a visible glow) under ultraviolet (UV) light. You can perform a UV light test by exposing the stone to a UV light source and observing if it emits a visible glow. A real Star Ruby should fluoresce under UV light.

These tests are not foolproof, and some fake Star Rubies may pass some of these tests. If you need clarification on the authenticity, it’s recommended that you consult a gemologist or an expert in the field who can perform more advanced tests and provide a professional evaluation.

Symbol of Faith and Spiritual Growth
Symbol of Faith and Spiritual Growth

What Does Star Ruby Symbolize?

Star Rubies have been valued for centuries for their beauty and rarity. They have also been associated with various symbolic meanings. Here are a few of the symbolic meanings that Star Rubies are commonly associated with:

  1. Power and Strength: Star Rubies are believed to give their wearer strength, courage, and confidence. They are said to help the wearer overcome obstacles and achieve their goals.
  2. Protection: Star Rubies are believed to protect from physical and emotional harm and negative energy and influences.
  3. Good Luck and Prosperity: Star Rubies are often associated with good luck and prosperity and are said to bring abundance and financial success to their wearer.
  4. Love and Passion: Star Rubies are associated with love and passion and stimulate the heart chakra and increase feelings of love and passion in relationships.
  5. Spiritual Growth: Star Rubies are believed to help their wearer connect with their spiritual self and promote spiritual growth and enlightenment.

These symbolic meanings are cultural and personal and may vary depending on the individual and their beliefs. Some people may attach different meanings to Star Rubies based on their experiences and cultural backgrounds.

Men ring with red star ruby
Men rings with red star ruby

Uses of Star Ruby

Star Rubies have several uses, both practical and symbolic. Here are some of the most common uses of Star Rubies:

  1. Jewelry: Star Rubies are highly prized for their beauty and rarity and are often used in jewelry, such as rings, necklaces, earrings, and pendants. They can be set in gold, silver, or platinum and combined with other gems and precious metals to create stunning jewelry pieces.
  2. Gemstone therapy: Star Rubies are believed to have various healing properties and are used in gemstone therapy to promote physical, emotional, and spiritual well-being. They are said to help balance the heart chakra, stimulate passion and love, and provide protection and strength.
  3. Decoration: Star Rubies are also decorative and can be placed in homes or offices to bring positive energy and enhance the ambiance.
  4. Investment: Star Rubies are valuable due to their rarity and beauty. Collectors and investors often seek them and can appreciate them over time.

The use of Star Rubies can vary depending on the individual and their personal preferences. For example, some people may use Star Rubies for purely aesthetic reasons. In contrast, others may use them for their symbolic or spiritual properties. 

Is Star Ruby a birthstone?

Birthstones are gems or minerals that are associated with specific birth months and are believed to bring good luck and protection to the wearer. Ruby is the traditional birthstone for July.

Star Ruby, which is not classified as a separate traditional birthstone, is actually a type of Ruby gemstone and is a birthstone for July.

Golden Rings with Ruby
Golden Rings with Ruby

How To Take Care Of Star Ruby Jewelry?

Star Ruby is a durable and hardy gemstone, but it still requires proper care to maintain its beauty and value. Here are some tips for taking care of jewelry:

  1. Cleaning: Star Rubies can be cleaned with warm soapy water and a soft cloth. Avoid using harsh chemicals or abrasive materials that can scratch the surface of the gemstone.
  2. Storage: Store your jewelry in a soft, dry, and cool place to prevent damage and scratches. Avoid storing the jewelry in direct sunlight, near heat sources, or in areas with high humidity.
  3. Handling: Handle the jewelry carefully, especially when putting it on or off. Avoid exposing it to sharp impacts or extreme temperatures, which can cause damage.
  4. Maintenance: Have your jewelry regularly inspected and cleaned by a professional jeweler to maintain its beauty and value.

Following these simple steps, you can keep your Star Ruby jewelry looking beautiful and valuable for years.


Which Gemstones Go Best With Star Ruby?

Star Ruby is a bold and striking gemstone that pairs well with other bold and contrasting gems to create a stunning jewelry piece. Some popular gemstones that pair well with it include:

Diamonds: Diamonds are a classic choice for a sparkling contrast to the rich red color of Star Ruby.

White Sapphire: White Sapphire offers a crisp and clean contrast to the red of Star Ruby while also complementing its brilliance.

Emeralds: Emeralds offer a rich green color that pairs well with the red of Star Ruby.

Yellow Sapphire: Yellow Sapphire is a sunny and cheerful choice that complements the warmth of Star Ruby.

Blue Sapphires: Blue Sapphires offer a cool and tranquil contrast to the red of Star Ruby, making for a stunning combination.

Ultimately, the best gemstone to pair with Star Ruby will depend on the style and preferences of the wearer. When in doubt, consult a professional jeweler for advice on the best gemstone combinations.

How much does a Star Ruby cost?

The cost of a Star Ruby varies based on factors such as carat weight, cut, clarity, and color. Star Rubies can range in price from several hundred to several thousand dollars per carat, depending on their quality and size.

Is Star Ruby better than ruby?

It is inaccurate to say that Star Ruby is “better” than ruby, as both types have unique characteristics and qualities.

Ruby is a highly prized and valuable gemstone known for its deep red color, durability, and high luster. Star Ruby, on the other hand, is a type of ruby that displays a distinctive star-like pattern, known as asterism, when viewed under direct light. This star pattern adds a layer of beauty and interest to the gemstone.

So, whether Star Ruby is “better” than ruby depends on what you value in a gemstone. Ultimately, it all comes down to personal preference and what the buyer is looking for in a ruby.

What is the benefit of wearing Star Ruby?

Star Ruby is considered to have various benefits when worn as a piece of jewelry or kept close to the body. Here are some of the benefits associated with wearing Star Ruby:

Physical Healing Properties: Star Ruby is believed to have healing properties that can aid in physical issues such as blood disorders, circulation problems and strengthening the heart.

Emotional Healing Properties: Star Ruby is also said to help calm emotions, promote self-confidence, and provide support during stress.

Protection: Star Ruby is believed to protect against negativity, including negative energies and people.

Enhances Personal Power: Wearing Star Ruby is said to improve one’s power and bring abundance, wealth, and success into one’s life.

Spiritual Growth: Star Ruby is also associated with spiritual growth and enlightenment, helping one connect with higher realms and tap into inner wisdom.

Which signs should not wear Ruby?

In astrology, it is believed that certain gemstones strongly influence specific zodiac signs and can bring both positive and negative effects.In traditional astrology, Ruby is believed to strongly influence Leo, the zodiac sign associated with the sun. For Leos, Ruby enhances their confidence, vitality, and personal power.

However, it is also believed that Ruby can negatively affect certain zodiac signs, such as Scorpio, as it interferes with their energy and disrupt their natural balance.

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