If you were born in September, your birthstone is one of the most storied gems in the world: sapphire, a stone whose deep blue has been admired by royalty, scholars, and travelers for thousands of years. In this guide we’ll cover what the September birthstone actually is, what it means, how to judge its quality, how to tell it apart from look-alikes, and how to wear it in a way that feels modern rather than fussy. We’ll also look at lapis lazuli, a beautiful and far more affordable blue stone that many people choose as an everyday alternative. If you’d like to see how September fits into the wider calendar, our guide to birthstones by month puts all twelve in one place.
What Is September’s Birthstone?
September’s official birthstone is sapphire, a variety of the mineral corundum. While corundum comes in many colors, the classic September stone is blue, and it’s the blue version most people picture when they hear the word “sapphire.” It’s prized for its rich color, its brilliance, and its remarkable durability, which makes it one of the most practical gemstones for jewelry worn day after day.
Alongside sapphire, several other blue stones are commonly worn to mark a September birthday. Lapis lazuli, with its deep ultramarine tone and flecks of golden pyrite, is the most popular accessible alternative, and iolite offers a softer violet-blue. These aren’t replacements for true sapphire so much as companions to it, giving September a whole family of blues to choose from.
The Meaning and Symbolism
Sapphire is the stone of wisdom, truth, and inner clarity. It opens and aligns the throat chakra, supporting honest self-expression and clear communication, and reaches up to the third eye to sharpen intuition and focus the mind. Its calm, contemplative blue carries a steadying energy that quiets mental chatter and helps you think clearly and speak your truth. For centuries it has been worn as a stone of sincerity and faithful commitment, which is exactly why it became such a powerful choice for engagement and heirloom rings.
Lapis lazuli is one of the great spiritual power stones. It awakens the third eye and the throat chakra together, deepening insight, intuition, and self-awareness while strengthening your voice. This is the stone of philosophers, mystics, and seekers, prized for thousands of years as a key that unlocks inner knowledge and higher truth. Wear it to cut through confusion, reconnect with your own wisdom, and stay grounded in what truly matters. Its energy invites honesty with yourself and a confident, clear-minded presence in the world.
A Short History
Sapphire’s history stretches back to antiquity. In the ancient world it was associated with the heavens and divine favor, and many cultures wore it as a powerful talisman of protection, believing it shielded the wearer from envy and harm. Medieval clergy wore sapphires as a symbol of purity and wisdom, and the stone became deeply woven into royal regalia across Europe. To this day, sapphires appear in some of the most famous crown jewels in existence, radiating authority and protection.
Lapis lazuli has an even older relationship with human craft and the sacred. It was mined in Afghanistan thousands of years ago and traded across vast distances to ancient Egypt and Mesopotamia, where it was carved into amulets and burial treasures meant to guide and protect the soul. The pharaohs prized it as a stone of the gods. Ground into powder, it became the legendary pigment ultramarine, more costly than gold and reserved for the most important paintings of the Renaissance.
What It Looks Like
Classic sapphire is a saturated, velvety blue that can range from a bright cornflower tone to a deep midnight color. The most admired sapphires hold their color in different lighting and have a glow that seems to come from within. Because corundum is so hard and takes such a high polish, well-cut sapphires have a lively, mirror-like brilliance.
Lapis lazuli looks quite different. Rather than transparent and faceted, it’s an opaque stone with a deep, even blue body, often scattered with tiny gold-colored pyrite inclusions and occasional white streaks of calcite. Those natural flecks are part of its charm, giving each piece a starry, night-sky quality that no two stones share exactly.
Quality: What to Look For
With sapphire, color is the single most important factor. The most valued stones show a pure, vivid blue that isn’t too dark or too washed out. Clarity matters too: small natural inclusions are normal, but you want a stone that’s reasonably clean to the eye. Cut affects how much the stone sparkles, since a good cut returns light evenly across the surface.
It’s also worth knowing that many sapphires on the market are heat-treated to improve their color and clarity. This is a widely accepted, stable practice, but untreated stones command a premium, so a reputable seller should always disclose treatment. With lapis lazuli, look for a deep, even blue with attractive pyrite flecks and minimal dull gray patches; the richer and more uniform the color, the higher the quality.
Where It Comes From
Sapphires are mined in several parts of the world, and origin can influence both color and value. Kashmir sapphires are legendary for their soft, velvety blue, though they’re extremely rare today. Myanmar (Burma) and Sri Lanka have long been celebrated sources, and Madagascar has become a major modern supplier. Australia, Thailand, and parts of Africa also produce significant quantities.
Lapis lazuli, by contrast, has one historic heartland: the mountains of Afghanistan, which have produced the finest material for millennia. Smaller deposits exist in Chile and Russia, but the deep, pyrite-flecked Afghan stone remains the benchmark by which others are judged.
Color and Type Varieties
Although blue is the September stone, corundum is wonderfully varied. Any color of gem-quality corundum that isn’t red is called a sapphire, so you’ll find yellow, pink, green, and even colorless sapphires. The most prized of all is the padparadscha, a rare and delicate blend of pink and orange named after a lotus blossom. Red corundum, of course, has its own famous name: ruby.
Some sapphires also display special optical effects. Star sapphires show a six-rayed star that glides across the surface when the stone is cut into a smooth dome, an effect caused by tiny needle-like inclusions. In crystal lore the three crossing rays of a star sapphire are said to carry the energies of faith, hope, and destiny, making it a treasured protective talisman. These varieties give collectors a lot to explore beyond the classic blue.
Sapphire vs. Similar Stones
Blue sapphire can be confused with several other blue gems. Tanzanite has a similar blue-violet tone but is much softer and shows different colors from different angles. Blue spinel and blue topaz can look comparable to an untrained eye, but they have different brilliance and weight. Iolite, the September alternative mentioned earlier, leans more violet and is noticeably less hard.
Lapis lazuli is easier to distinguish because it’s opaque rather than transparent. Its closest look-alike is sodalite, which is also blue but generally lacks the golden pyrite flecks and has a more patchy, marbled appearance. When in doubt, those tiny gold sparkles are a good sign you’re looking at genuine lapis.
Real vs. Fake: How to Tell
Synthetic sapphires have been produced for over a century and are chemically identical to natural ones, so telling them apart usually requires a trained gemologist or laboratory testing. For a buyer, the most reliable protection is documentation: a report from a respected gem lab, and a seller who clearly states whether a stone is natural, synthetic, or treated. Glass imitations are softer and often contain tiny bubbles, which an expert can spot easily.
For lapis lazuli, watch for dyed stones and reconstituted material made from lesser fragments bound together. Genuine lapis has natural variation in its color and pyrite, while dyed pieces can look suspiciously uniform and may leave color on a cloth dampened with a little acetone. Buying from a transparent, established seller is your best safeguard with any gemstone.
September Zodiac Signs
September spans two zodiac signs. Virgo runs from roughly August 23 to September 22, and Libra picks up from about September 23 to October 22. Virgo is associated with thoughtfulness, precision, and a grounded, observant nature, while Libra is linked to balance, harmony, and a love of beauty. Sapphire amplifies Virgo’s clarity and discernment, while lapis lazuli’s deep insight helps Libra find true balance and speak from a place of inner truth. For both signs, these blue stones act as energetic allies that sharpen the mind and steady the heart.
Feng Shui and Placement
In feng shui, deep blue stones carry calm, flowing Water energy, making them wonderful tools for cultivating peace, wisdom, and clear thinking in your space. Place a piece of lapis lazuli in the knowledge and self-cultivation area of your home or desk (the front-left zone as you enter) to support study, focus, and inner growth. Sapphire and lapis near your workspace invite clearer communication and confident decisions, while a blue stone by the bedside encourages a settled, restful atmosphere. Worn on the body, these stones keep their grounding, clarifying energy close throughout the day.
How to Wear It
The beauty of a blue September stone is how versatile it is. Deep blue pairs effortlessly with neutrals, denim, white, and warm metals, so it slips into everyday outfits without trying too hard. A sapphire is hard enough to wear daily, including in rings, while lapis lazuli shines in bracelets, beaded designs, and pieces where its rich color and gold flecks can be seen up close. Many people wear these stones intentionally, choosing them on days they want to feel clear-headed, honest, and self-assured.
If you love the calm, clear-headed feeling these blues evoke, our Calm & Clarity collection gathers grounded, blue-toned natural-stone bracelets designed for real, everyday wear. Stack a beaded lapis piece with simpler bands, or let a single strong blue stone do the talking against bare skin.
Caring for It
Sapphire is exceptionally tough, sitting at 9 on the Mohs hardness scale, second only to diamond, which makes it forgiving in daily life. Lapis lazuli is much softer, around 5 to 6, and more porous, so it needs gentler handling. A few simple habits keep both looking their best:
- Clean sapphire with warm water, mild soap, and a soft brush, then rinse and dry thoroughly.
- Clean lapis lazuli with only a soft, slightly damp cloth, never soaking or scrubbing it.
- Keep lapis away from perfume, lotion, household chemicals, and prolonged water exposure.
- Store pieces separately in a soft pouch so harder stones don’t scratch softer ones.
- Put bracelets and rings on last, after applying skincare and fragrance.
- Avoid ultrasonic and steam cleaners for lapis lazuli, which can damage its surface.
- To refresh your stone’s energy, rest it under moonlight overnight, especially around the full moon, or set it briefly on a cluster of clear quartz.
A Thoughtful September Gift
A blue birthstone makes a quietly meaningful gift because it carries a built-in story. Giving sapphire or lapis lazuli says you noticed the month someone arrived in the world, and the stone’s links to wisdom, sincerity, and protective energy add a thoughtful layer without needing to spell anything out. A lapis bracelet, in particular, is an accessible way to mark a September birthday with something that’s worn and remembered rather than tucked away.
Frequently Asked Questions
Is sapphire really the September birthstone? Yes. Sapphire is September’s official birthstone, and the classic blue variety is the one most often associated with the month.
What is a cheaper alternative to sapphire? Lapis lazuli is the most popular affordable alternative. It offers a rich blue color and a powerful reputation as a stone of wisdom and clarity. Iolite is another budget-friendly blue option.
Can I wear a sapphire bracelet every day? Sapphire’s hardness makes it well suited to daily wear. Lapis lazuli is softer, so it’s better treated gently and protected from chemicals and water.
How can I tell if lapis lazuli is real? Genuine lapis shows natural color variation and small gold-colored pyrite flecks. Suspiciously uniform color may indicate dye, so buy from a transparent, reputable seller.
What chakra is sapphire connected to? Blue sapphire resonates with the throat and third eye chakras, supporting clear communication, intuition, and focused, truthful thinking.
A Realistic Note
Crystals and birthstones are wonderful companions for intention, reflection, and connecting with centuries of meaning, but they are not a substitute for professional medical advice. Sapphire and lapis lazuli make no health claims and are not a treatment for any medical condition. If you’re dealing with a health concern, please speak with a qualified professional and enjoy your stones as the meaningful, energizing keepsakes they are.
Final Thoughts
The September birthstone gives you a beautiful range of blues, from the brilliant, enduring depth of sapphire to the ancient, gold-flecked richness of lapis lazuli. Each carries centuries of meaning, a powerful energy of wisdom and clarity, and a color that simply feels good to wear. Whether you’re marking your own birthday or choosing a gift, you’re choosing a stone with real history and real presence behind it. If you’d like a grounded, everyday way to wear that calm blue, explore our Calm & Clarity collection and find the piece that feels like yours.