The September birthstone is the sapphire — the deep, velvety-blue gem tied for centuries to wisdom, loyalty and truth. Unlike some months, September keeps things simple: sapphire is its one classic birthstone, with no competing alternate. If you or someone you love has a September birthday, this guide covers what sapphire means, where it comes from, the two star signs it belongs to, and how to wear it every day.
What is the September birthstone?
September’s birthstone is the sapphire — the blue variety of the mineral corundum, the same gem family as ruby. Its celebrated colour ranges from soft cornflower to deep, royal velvety blue, and comes from traces of iron and titanium in the crystal. After diamond, sapphire is one of the hardest gems on earth, ranking 9 on the Mohs scale, which makes it superbly suited to everyday wear. (Sapphire also occurs in pinks, yellows and other “fancy” shades, but blue is the September classic.) At Alya Stone we set lab-grown sapphire — identical in chemistry, hardness and colour to mined sapphire — in solid 9k recycled gold, so the stone’s rich blue can be worn and layered without hesitation.
The meaning & symbolism of sapphire
Sapphire has long been a stone of wisdom, loyalty, truth and nobility. Its name traces to the Greek sappheiros and the Latin sapphirus, both meaning “blue.” Across cultures the sky-blue gem was linked to the heavens, divine favour and protection: medieval clergy wore it as a symbol of heaven, and kings and queens prized it as a stone of sincere, faithful love. That association with constancy is exactly why a sapphire still feels meaningful — it is a gem of devotion, integrity and calm, a natural choice to mark a loyal friendship, a milestone, or a thoughtful September personality.
A short history of the sapphire
Sapphires have been treasured for thousands of years. The ancient Persians believed the earth rested on a giant sapphire whose reflection coloured the sky blue. Greeks and Romans wore the gem for protection and wisdom, and across medieval Europe it adorned royal regalia and ecclesiastical treasures as a symbol of heaven and truth. Historically the finest stones came from Kashmir, Sri Lanka (Ceylon) and Myanmar. In modern times sapphire became one of the most famous engagement-ring stones in the world — the deep-blue sapphire ring worn by Princess Diana, and later by the Princess of Wales, sealed its place as a romantic, enduring choice.
September birthstone by star sign
September spans two zodiac signs, and the sapphire suits both:
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Virgo (about 23 August – 22 September): Virgo is thoughtful, discerning and loyal, and sapphire’s symbolism of wisdom and sincerity is a natural fit — a meaningful birthstone for a Virgo.
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Libra (about 23 September – 22 October): Libra values balance, harmony and truth, and the sapphire’s calm, steadfast blue mirrors the sign beautifully — a fitting birthstone for a Libra.
How to wear & gift the September birthstone
The simplest way to wear a birthstone today is as a charm you can add to a necklace and keep close. Our Curation Suite is designed for exactly that: choose a chain, then clip on the charms that matter to you. A September sapphire charm makes an elegant birthday or anniversary gift, a deep everyday blue that pairs with anything, or one stone in a growing family-birthstone necklace where each loved one gets their month.
Two ways to wear September at Alya Stone — the vintage-inspired Aster September Sapphire Charm with its ribbed-frame setting, or the pavé-set Ellis September Sapphire Charm. Both are made to order in solid 9k gold.
Browse every month in the Birthstones collection, or read the full Birthstones by Month guide. Along the calendar from here: the August birthstone, peridot, and the October birthstone, pink tourmaline.
September birthstone FAQ
What is the September birthstone?
The September birthstone is the sapphire — the blue variety of corundum and the classic single birthstone for September. Its colour ranges from cornflower to deep royal blue.
What does the sapphire symbolise?
Sapphire has long symbolised wisdom, loyalty, truth and nobility. Its name comes from words meaning “blue,” and it was historically linked to the heavens, sincerity and faithful love.
Is lab-grown sapphire a real sapphire?
Yes. Lab-grown sapphire has the same chemistry, hardness and blue colour as mined sapphire — it is simply grown rather than mined. It’s the stone we use in our September charms for consistent colour and value.
What is the September birthstone for Virgo and Libra?
Sapphire is shared by both September signs. Its wisdom-and-sincerity symbolism suits discerning Virgo, while its calm, balanced blue fits harmony-loving Libra.
Is a sapphire durable enough for everyday wear?
Very. Sapphire ranks 9 on the Mohs hardness scale — second only to diamond — so a sapphire charm is exceptionally well suited to being worn and layered daily.
September Birthstone: Meaning, Symbolism & How to Wear It
The September birthstone is the sapphire — the deep, velvety-blue gem tied for centuries to wisdom, loyalty and truth. Unlike some months, September keeps things simple: sapphire is its one classic birthstone, with no competing alternate. If you or someone you love has a September birthday, this guide covers what sapphire means, where it comes from, the two star signs it belongs to, and how to wear it every day.
What is the September birthstone?
September’s birthstone is the sapphire — the blue variety of the mineral corundum, the same gem family as ruby. Its celebrated colour ranges from soft cornflower to deep, royal velvety blue, and comes from traces of iron and titanium in the crystal. After diamond, sapphire is one of the hardest gems on earth, ranking 9 on the Mohs scale, which makes it superbly suited to everyday wear. (Sapphire also occurs in pinks, yellows and other “fancy” shades, but blue is the September classic.) At Alya Stone we set lab-grown sapphire — identical in chemistry, hardness and colour to mined sapphire — in solid 9k recycled gold, so the stone’s rich blue can be worn and layered without hesitation.
The meaning & symbolism of sapphire
Sapphire has long been a stone of wisdom, loyalty, truth and nobility. Its name traces to the Greek sappheiros and the Latin sapphirus, both meaning “blue.” Across cultures the sky-blue gem was linked to the heavens, divine favour and protection: medieval clergy wore it as a symbol of heaven, and kings and queens prized it as a stone of sincere, faithful love. That association with constancy is exactly why a sapphire still feels meaningful — it is a gem of devotion, integrity and calm, a natural choice to mark a loyal friendship, a milestone, or a thoughtful September personality.
A short history of the sapphire
Sapphires have been treasured for thousands of years. The ancient Persians believed the earth rested on a giant sapphire whose reflection coloured the sky blue. Greeks and Romans wore the gem for protection and wisdom, and across medieval Europe it adorned royal regalia and ecclesiastical treasures as a symbol of heaven and truth. Historically the finest stones came from Kashmir, Sri Lanka (Ceylon) and Myanmar. In modern times sapphire became one of the most famous engagement-ring stones in the world — the deep-blue sapphire ring worn by Princess Diana, and later by the Princess of Wales, sealed its place as a romantic, enduring choice.
September birthstone by star sign
September spans two zodiac signs, and the sapphire suits both:
How to wear & gift the September birthstone
The simplest way to wear a birthstone today is as a charm you can add to a necklace and keep close. Our Curation Suite is designed for exactly that: choose a chain, then clip on the charms that matter to you. A September sapphire charm makes an elegant birthday or anniversary gift, a deep everyday blue that pairs with anything, or one stone in a growing family-birthstone necklace where each loved one gets their month.
Two ways to wear September at Alya Stone — the vintage-inspired Aster September Sapphire Charm with its ribbed-frame setting, or the pavé-set Ellis September Sapphire Charm. Both are made to order in solid 9k gold.
Browse every month in the Birthstones collection, or read the full Birthstones by Month guide. Along the calendar from here: the August birthstone, peridot, and the October birthstone, pink tourmaline.
September birthstone FAQ
What is the September birthstone?
The September birthstone is the sapphire — the blue variety of corundum and the classic single birthstone for September. Its colour ranges from cornflower to deep royal blue.
What does the sapphire symbolise?
Sapphire has long symbolised wisdom, loyalty, truth and nobility. Its name comes from words meaning “blue,” and it was historically linked to the heavens, sincerity and faithful love.
Is lab-grown sapphire a real sapphire?
Yes. Lab-grown sapphire has the same chemistry, hardness and blue colour as mined sapphire — it is simply grown rather than mined. It’s the stone we use in our September charms for consistent colour and value.
What is the September birthstone for Virgo and Libra?
Sapphire is shared by both September signs. Its wisdom-and-sincerity symbolism suits discerning Virgo, while its calm, balanced blue fits harmony-loving Libra.
Is a sapphire durable enough for everyday wear?
Very. Sapphire ranks 9 on the Mohs hardness scale — second only to diamond — so a sapphire charm is exceptionally well suited to being worn and layered daily.