If you were born in September, your birthstone is sapphire, a gemstone best known for its rich blue color, exceptional durability, and long history of symbolism.
Although blue sapphire is the classic choice, sapphire actually comes in a wide range of colors, including pink, yellow, green, purple, orange, and white. That makes it a surprisingly versatile gemstone for rings, earrings, necklaces, bracelets, and meaningful birthday gifts.
Sapphire has also traditionally been associated with qualities such as wisdom, sincerity, truth, loyalty, faithfulness, and nobility. Its combination of symbolism, beauty, and durability has helped make it one of the world’s most enduring gemstones.
September Birthstone at a Glance
| Feature | Sapphire |
|---|---|
| Birth month | September |
| Mineral | Corundum |
| Most famous color | Blue |
| Other colors | Pink, yellow, green, purple, orange, white and more |
| Hardness | 9 on the Mohs scale |
| Traditional meanings | Wisdom, truth, loyalty, sincerity and nobility |
| Popular jewelry | Rings, earrings, necklaces and bracelets |
If you’re interested in the birthstones for the entire year, see this guide to birthstones by month for a month-by-month overview.
What Is the September Birthstone?
The September birthstone is sapphire, a gemstone variety of the mineral corundum.
Most people immediately associate sapphire with a deep or vivid blue color, but that is only one part of the sapphire family. Corundum can occur in many colors. Red corundum is classified as ruby, while other non-red colors are generally considered sapphires.
The word sapphire has ancient roots and has been associated with the idea of a blue stone. Throughout history, sapphire has appeared in royal jewelry, religious objects, and other important pieces.
Its durability is another reason it has remained popular. Sapphire ranks 9 on the Mohs hardness scale, second only to diamond among commonly known natural gemstones.
That makes sapphire particularly well suited to jewelry that is worn regularly, including rings.
What Does the September Birthstone Mean?
Sapphire has accumulated a rich collection of meanings over centuries.
It is traditionally associated with:
- Wisdom
- Truth
- Sincerity
- Loyalty
- Faithfulness
- Nobility
- Protection
GIA notes that sapphire has traditionally symbolized sincerity, truth, faithfulness, and nobility. Historical beliefs also connected blue sapphire with protection from harm and envy.
Sapphire meaning for relationships
Because sapphire has long been connected with loyalty and faithfulness, it can have a particularly meaningful connection to romantic jewelry.
A sapphire ring can represent:
- A September birthday
- Lasting love
- Loyalty between partners
- A milestone anniversary
- A promise or commitment
- A meaningful alternative to a traditional diamond
This symbolism is one reason sapphire continues to appear in engagement rings and other sentimental jewelry.
What Color Is the September Birthstone?
The most recognizable September birthstone color is blue.
Blue sapphires can range from relatively light blue to intensely saturated, deep blue shades. However, sapphire is not limited to blue.
Sapphires can also appear in:
- Pink
- Yellow
- Green
- Purple
- Orange
- White
- Black
- Brown
- Color-changing varieties
GIA and the American Gem Society both recognize sapphire’s broad color range. Sapphires in colors other than blue are commonly referred to as fancy sapphires.
Blue sapphire
Blue is the traditional and most recognizable sapphire color.
Its appearance can vary significantly depending on the stone’s saturation, tone, and hue. Some buyers prefer a bright, lively blue, while others are drawn to darker, more dramatic stones.
Pink sapphire
Pink sapphire offers a softer and more romantic look. It can work especially well in feminine jewelry designs and alternative engagement rings.
Yellow sapphire
Yellow sapphire has a warm appearance that pairs naturally with yellow-gold jewelry. It can be a good choice if you want the symbolism and durability of sapphire without choosing traditional blue.
Green sapphire
Green sapphire can range from subtle, muted shades to more noticeable green tones. It offers a more unconventional appearance while remaining part of the sapphire family.
Padparadscha sapphire
One of the most distinctive sapphire varieties is padparadscha, a rare pinkish-orange sapphire.
Its unusual combination of pink and orange makes it especially sought after. The American Gem Society notes that these stones can command high prices depending on their quality and characteristics.
If you’re comparing different gemstones rather than sapphire colors, a broader gemstone guide can help you understand how sapphire compares with other popular stones.
Why Is Sapphire Blue?
Blue sapphire gets its color from trace elements present within the corundum crystal.
Iron and titanium are important contributors to blue coloration, while other trace elements can produce different sapphire colors.
This is why two sapphires can both be classified as blue while looking noticeably different.
Color is also one of the most important factors when evaluating a sapphire. Instead of judging a stone simply by whether it is “blue,” look at how the color appears in different lighting and whether the stone has the tone and saturation you personally prefer.
Is Sapphire a Good Gemstone for Jewelry?
Yes. Sapphire is one of the more practical gemstones for everyday jewelry.
Its Mohs hardness of 9 gives it excellent resistance to scratching, which is particularly useful for rings that are exposed to frequent contact with other surfaces.
Sapphire also has no cleavage, according to GIA, which contributes to its suitability for rings and other jewelry settings.
That doesn’t mean sapphire is indestructible. A sapphire can still chip or become damaged by a strong impact, and the setting holding the gemstone also needs protection.
September Birthstone Jewelry Ideas
Sapphire works across many types of jewelry, so you don’t have to limit yourself to a traditional blue gemstone ring.
Sapphire rings
A sapphire ring is one of the most natural choices for a September birthday.
For a classic appearance, choose blue sapphire in a simple setting. For something more distinctive, consider a pink, yellow, green, or padparadscha sapphire.
If you’re specifically shopping for a birthday-inspired ring, you can explore the September birthstone rings collection for designs centered around September’s gemstone.
Sapphire engagement rings
Sapphire can also be used as an engagement ring center stone.
Blue sapphire creates a strong contrast against white metals such as platinum or white gold, while yellow sapphire can complement a warm yellow-gold setting.
If you’re considering sapphire because you want something different from a diamond, think about the overall look of the ring rather than focusing only on the gemstone itself. The setting, accent stones, metal, and sapphire color all affect the final appearance.
Sapphire earrings
Sapphire earrings can make an excellent birthday gift because they don’t require the same sizing considerations as a ring.
Studs offer a simple everyday look, while drop or halo-style earrings can create a more noticeable statement.
Sapphire necklaces
A sapphire pendant is another versatile September birthday gift. A simple blue sapphire pendant can be worn with casual clothing or dressed up for formal occasions.
Sapphire bracelets
Sapphire bracelets can incorporate multiple gemstones or use sapphire as a central accent. They can also be paired with other jewelry for a layered look.
How to Choose a September Birthstone Ring
If you’re buying a sapphire ring, don’t choose based on color alone.
Consider these factors:
1. Color
Color is usually the first thing you’ll notice.
For blue sapphire, look for a color that feels vivid and attractive to you rather than assuming the darkest stone is automatically the best.
2. Clarity
Sapphires commonly contain inclusions. Some inclusions are expected in natural stones and don’t necessarily make a sapphire unattractive.
The key is whether the inclusions affect the stone’s appearance, durability, or overall value.
3. Cut
A good cut can improve how effectively a sapphire reflects light and displays its color.
Look at the gemstone from different angles and under different lighting conditions rather than judging it from one photograph alone.
4. Carat weight
A larger sapphire will generally cost more, but size shouldn’t be the only consideration.
Two sapphires of the same carat weight can look different because gemstones have different proportions and shapes.
5. Treatment
Many sapphires are treated to improve their color or clarity. Heat treatment is common and widely accepted in the gemstone trade.
When buying a sapphire, ask whether the gemstone has been treated and what treatment was used.
This is especially important if you’re comparing stones with different prices or considering a valuable natural sapphire.
Natural vs. Lab-Created Sapphire
If you’re shopping for sapphire jewelry, you may encounter both natural and lab-created stones.
A natural sapphire formed naturally within the Earth, while a lab-created sapphire is produced under controlled conditions and has essentially the same chemical and physical properties as natural corundum.
The right choice depends on your priorities, including budget, origin, rarity, and personal preference.
For valuable or high-end natural sapphires, documentation and treatment information can become especially important.
How to Care for September Birthstone Jewelry
Sapphire is durable, but proper care will help keep it looking its best.
For routine cleaning, GIA recommends warm, soapy water as a safe option. However, the appropriate cleaning method can depend on how the sapphire has been treated. Fracture-filled or dyed sapphires may require more cautious care.
A simple care routine includes:
- Clean sapphire jewelry with warm water and mild soap when appropriate.
- Use a soft brush to remove dirt around the setting.
- Rinse carefully.
- Dry with a soft, lint-free cloth.
- Store sapphire jewelry separately to reduce scratching against other pieces.
- Ask about treatments before using professional cleaning equipment.
If the jewelry contains other gemstones or a delicate setting, follow the care requirements for the most sensitive component.
Sapphire vs. Other Birthstones
Every birthstone has its own personality, color, durability, and symbolism.
For example, sapphire is the September birthstone, while ruby is associated with July and peridot with August. If you’re choosing a gemstone gift for someone born in a different month, a month-by-month birthstone guide makes comparison easier.
For sapphire-specific comparisons, you can also explore sapphire vs. tanzanite to see how the two gemstones differ.
If you’re interested in purple gemstones, amethyst vs. purple sapphire provides another useful comparison.
And if yellow gemstones are more your style, citrine vs. yellow sapphire can help distinguish the two options.
Frequently Asked Questions
What is the September birthstone?
Sapphire is the September birthstone. Blue sapphire is the best-known variety, but sapphires occur in many other colors.
What does the September birthstone symbolize?
Sapphire has traditionally been associated with sincerity, truth, faithfulness, loyalty, wisdom, and nobility. Historical traditions have also connected it with protection.
What color is September’s birthstone?
Blue is the classic September birthstone color, but sapphire can also occur in pink, yellow, green, purple, orange, white, and other colors.
Is sapphire durable enough for an engagement ring?
Yes. Sapphire has a Mohs hardness of 9, making it a durable choice for an engagement ring and other jewelry worn regularly.
Is sapphire more than just a blue gemstone?
Yes. Blue sapphire is simply the most famous variety. Other sapphire colors include pink, yellow, green, purple, orange, and white. Red corundum is classified as ruby rather than sapphire.
Is September sapphire a good birthday gift?
Yes. Sapphire combines a strong connection to September with attractive colors, durability, and traditional symbolism. A sapphire ring, pendant, earrings, or bracelet can all make meaningful birthday gifts.
Final Thoughts
Sapphire is an especially versatile September birthstone because it combines color, durability, history, and symbolism in one gemstone.
Blue sapphire remains the classic choice, but exploring pink, yellow, green, white, and other sapphire varieties can lead to a more personal piece of jewelry. With a Mohs hardness of 9 and centuries of association with loyalty, truth, sincerity, and nobility, sapphire is equally suited to a September birthday gift, anniversary jewelry, or an engagement ring.
For someone born in September, a sapphire isn’t simply a beautiful gemstone, it can also make the jewelry feel connected to the person receiving it.
