The birthstone edit · September
Sapphire is September’s birthstone, and blue sapphire is its best-known color. Sapphire belongs to corundum and ranks 9 on the Mohs scale, making it a strong choice for many jewelry styles. Sapphire also comes in other colors; the red variety of corundum is called ruby.
A deeper blue. A lasting connection. Discover the gemstone’s story, compare jewelry options and choose a birthday gift that fits the way you wear jewelry.
Learn about September’s gemstones here, compare the current jewelry collection, or plan a visit to Nina Wynn in Denver.
September’s gemstone spotlight
Blue sapphire: the gemstone at a glance
- Birthstone month
- September
- Mineral
- Corundum
- Color
- Blue, from lighter tones to deep blue and violetish blue
- Mohs hardness
- 9
- Known source regions
- Sri Lanka, Madagascar, Myanmar, Australia and Montana in the United States; Kashmir is a historic source
- Jewelry to consider
- Rings, huggies and studs, with care matched to treatment
What is blue sapphire?
Blue sapphire’s appearance varies with hue, tone, saturation and cut. A deep blue stone can be beautiful, but a nearly black face-up appearance is different from a vivid blue that stays bright. Sapphire can contain fine needle-like inclusions often called silk. Other sapphires are pink, yellow, green or orange; September does not require blue, although this guide gives blue sapphire the spotlight. An oval or baguette describes shape rather than a separate gemstone variety.
Blue sapphire meaning and history
Sapphire has long been associated with sincerity, loyalty and nobility. Its use in royal and romantic jewelry makes it a familiar alternative to a colorless diamond, but it can feel just as personal in a small everyday earring. A September birthstone gift can honor a lasting friendship or an important promise. Sapphire is also traditionally linked with the 5th and 45th wedding anniversaries. Cultural stories add meaning without proving protective or healing powers.
Where does blue sapphire come from?
Sri Lanka and Myanmar are historic sapphire sources, while Madagascar, Australia and Montana are among other important localities. Kashmir’s exceptional historic blue sapphires are especially renowned, but an attractive blue color does not prove Kashmir origin. “Ceylon” is a traditional geographic name for Sri Lanka, not a universal quality grade. A country claim should concern the actual stone and be supported when provenance matters. Our featured jewelry is not assigned a mining origin merely because those regions appear in this guide.
Source regions describe the gemstone generally. They are not verified mining origins of the jewelry pictured here. Mohs hardness measures scratch resistance, not complete durability.
How to choose blue sapphire jewelry
Balance blue with brightness
Look at the mounted stone in ordinary light and compare its face-up color. Choose between lighter blue, vivid blue and deeper shades by appearance and taste. A famous color description cannot replace viewing the piece.
Separate heat from other treatments
Heating is common and widely accepted for sapphire. Lattice diffusion, filling and dyeing are different disclosures that can affect value or care. Ask about the treatment of the individual stone; “natural sapphire” does not mean untreated.
Check the full jewelry design
For rings, assess how securely the stone is set and whether the edges are protected. For huggies, compare the inside diameter, closure and how the hoop sits on the ear. For single flat-backs, check gauge, post length and whether the listing includes the post.
Blue sapphire vs. aquamarine vs. blue topaz
| Option | Identity / appearance | Mohs | Consideration |
|---|---|---|---|
| Blue sapphire | Blue corundum | 9 | September birthstone with a rich blue palette |
| Aquamarine | Blue to greenish blue beryl | 7.5–8 | March birthstone; often lighter and more transparent-looking |
| Blue topaz | A separate mineral, commonly treated for color | 8 | A different blue gemstone; identity should be disclosed |
Blue sapphire jewelry ideas for a September birthday
A blue sapphire ring can become the centerpiece of a simple gold look. If the recipient prefers smaller jewelry, sapphire and diamond huggies bring both color and sparkle close to the face. A baguette flat-back gives blue a more architectural line, while a floral setting softens the silhouette. For a September birthday gift, start with the kind of jewelry they already wear; do not assume that a statement ring suits someone whose everyday pieces are tiny studs. Yellow gold adds warmth around the blue, and white gold offers a cooler finish. Sapphire’s color also sits comfortably beside a classic diamond stud.
Before you choose a gift
Check metal preference, ring size where needed, and whether earrings are sold singly or as a pair. For flat-back or cartilage jewelry, confirm piercing fit with a professional. A birthstone can honor a birthday, but it can also be a favorite color worn in any month.
How to clean and care for blue sapphire jewelry
For untreated or heat-treated sapphire, lukewarm soapy water and a soft brush are generally suitable. Filled or dyed material should be cleaned with a damp cloth and the seller’s specific guidance. Ask a jeweler before using ultrasonic or steam cleaners, especially when treatment is unknown or stones may be loose. Sapphire is hard and tough, but the metal setting still needs care. Remove rings for heavy work and store jewelry separately from softer gemstones.
Shop the September birthstone edit
Explore Nina Wynn jewelry selected for this gemstone story. Product pages show current options, specifications and availability; an article recommendation does not guarantee stock.
Current picks from the September birthstone collection. Check each listing for gemstone details, fit, and whether earrings are sold singly or as a pair. Swipe to explore.
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14K Yellow Gold Natural Pink Sapphire & Lab-Grown Diamond Reversible Huggies 10mm | Diana
Solid 14K Yellow Gold / Sapphire Pink / 10mm
$850.00
View jewelry & options -
Natural Blue Sapphire Healing Gemstone Chain Bracelet | Solid 14K Yellow Gold
Blue Sapphire / Solid 14K Yellow Gold
$495.00
View jewelry & options -
Natural Gemstone Threadless Flat Back Earring | 14K White Gold
Solid 14K White Gold / Sapphire Blue
$125.00
View jewelry & options -
Natural Blue Sapphire Healing Gemstone Chain Bracelet | Solid 14K White Gold
Blue Sapphire / Solid 14K White Gold
$495.00
View jewelry & options -
Natural Gemstone Threadless Flat Back Earring | 14K Yellow Gold
Solid 14K Yellow Gold / Sapphire Blue
$125.00
View jewelry & options -
Natural Blue Sapphire Healing Gemstone Chain Bracelet | Sterling Silver
Blue Sapphire / Sterling Silver
$295.00
View jewelry & options
Product photographs show the selected gemstone or catalog piece. Confirm the selected variant and fit before ordering.
September birthstone questions, answered
What is the birthstone for September?
Sapphire is September’s birthstone. Blue is its best-known color, but sapphire occurs in other colors as well.
Can sapphire be worn in an everyday ring?
Sapphire is generally a durable ring stone at Mohs 9. Treatment, stone condition and the setting still determine the care a particular ring needs.
Does a September birthstone have to be blue?
No. Blue is traditional and familiar, but pink, yellow and other sapphire colors also belong to the sapphire family.
Are blue sapphire and ruby related?
Yes. Both are corundum. Red corundum is ruby; blue corundum is blue sapphire.
Does natural sapphire mean unheated?
No. Natural describes origin. Heating and other treatments should be disclosed separately.
Is Ceylon sapphire a different gemstone?
No. Ceylon is a traditional name for Sri Lanka. It refers to geographic origin rather than a separate mineral or a guaranteed quality level.
What is a good September birthday gift without ring size?
Sapphire huggies or studs can avoid ring-size questions. Confirm whether earrings are sold as a pair or individually and whether the fit suits the recipient.
Gemological sources
- GIA: September birthstone guide
- GIA: Blue sapphire gem encyclopedia
- GIA: Blue sapphire buying guide
- GIA: Blue sapphire care and cleaning
Gemological facts draw on the sources above. Styling suggestions are Nina Wynn editorial guidance. Gemstone meanings describe cultural associations, not health or outcome claims.
Explore all 12 birthstone guides
Return to the complete birthstone guide for the month-by-month chart, colors and care.
Ways to wear September birthstones
Start with a color you enjoy, then choose a scale and setting that fit your routine. A small stud adds a quiet accent; a hoop, charm or pendant can give the stone more presence. Compare the actual gemstone, dimensions and selling unit on the product page before choosing.
For a personal gift, combine a birthstone with a favorite metal or an existing jewelry collection. Softer or more delicate stones need a protected setting and thoughtful wear. A birthstone is a personal connection, so you can choose any month or color that feels meaningful.
