The December birthstone is blue topaz — the cool, clear-water gem associated with calm, clarity and easy communication — with turquoise, tanzanite and zircon recognised as December’s traditional alternates. December is one of the months with the widest choice of stones, and at Alya Stone we lead with London blue topaz for its deep, serene blue. If you or someone you love has a December birthday, this guide covers what blue topaz means, where it comes from, the two star signs it belongs to, and the easiest way to wear it every day.
What is the December birthstone?
December is generous with options: its birthstones include blue topaz, turquoise, tanzanite and blue zircon. We lead with London blue topaz — the deepest, slightly steely blue in the topaz family — because its colour is rich yet endlessly wearable. Topaz is an aluminium-silicate mineral that sits at a hard 8 on the Mohs scale, making it one of the more durable coloured stones for everyday jewellery. Its signature London blue tone is drawn out through a standard, stable colour treatment that is widely used across fine jewellery. At Alya Stone we set blue topaz in solid 9k recycled gold, never plated, so its calm blue can be worn and layered for years.
The meaning & symbolism of blue topaz
Blue topaz is a stone of calm and clarity. Its cool, watery colour has long been linked to serenity, honesty, clear thinking and open communication — a steadying, level-headed gem. Topaz more broadly has carried associations with truth and loyalty for centuries, and the blue variety in particular feels like clear skies and still water: a quiet, grounding presence. That makes a blue topaz charm a thoughtful way to mark a fresh start, a calm new chapter, or someone whose steadiness you treasure.
A short history of topaz
Topaz has been prized for thousands of years. Its name may come from the Sanskrit tapas, meaning fire, or from Topazios — the old Greek name for an island in the Red Sea (today’s Zabargad). For much of history, any warm-coloured transparent gem was loosely called “topaz,” which is why golden citrine and topaz were so often confused. True topaz occurs naturally in many colours, including colourless, and the rich London blue shade became a modern favourite as jewellers refined the stable techniques that bring out its depth. Fine topaz is found in Brazil, Sri Lanka, Nigeria and beyond.
December birthstone by star sign
December spans two zodiac signs, and blue topaz’s calm, clear symbolism suits both:
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Sagittarius (about 22 November – 21 December): Sagittarius is adventurous, honest and truth-seeking, and blue topaz’s themes of clarity and honesty make a fitting birthstone for a Sagittarius.
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Capricorn (about 22 December – 19 January): Capricorn is grounded, disciplined and steady, and the stone’s calm, level-headed symbolism is a natural match — a meaningful birthstone for a Capricorn.
How to wear & gift the December 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 built for exactly that: choose a chain, then clip on the charms that mean something to you. A blue topaz charm makes a serene December birthday gift — doubly lovely for a holiday-season baby — a cool everyday blue that pairs beautifully with both yellow and white gold, or one stone in a growing family-birthstone necklace where each loved one gets their month.
Two ways to wear December at Alya Stone — the vintage-inspired Aster December Topaz Charm with its ribbed-frame setting, or the pavé-set Ellis December Topaz 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: the November birthstone, citrine, and the January birthstone, garnet.
December birthstone FAQ
What is the December birthstone?
December has several birthstones: blue topaz, turquoise, tanzanite and blue zircon. At Alya Stone we lead with London blue topaz for its deep, serene, wearable blue.
What does blue topaz symbolise?
Blue topaz is a stone of calm and clarity, symbolising serenity, honesty, clear thinking and open communication. Its cool blue evokes clear skies and still water.
Why does December have so many birthstones?
Birthstone lists evolved over time and December gathered several cool-blue stones — turquoise and zircon are traditional, while blue topaz and tanzanite are modern additions. All are legitimate; choose by colour or meaning.
What is the December birthstone for Sagittarius and Capricorn?
Blue topaz is shared by both December signs. Its clarity and honesty suit truth-seeking Sagittarius, while its calm, steady symbolism resonates with grounded Capricorn.
Is blue topaz durable enough for everyday wear?
Yes. Topaz ranks 8 on the Mohs hardness scale, so a blue topaz charm is well suited to everyday wear — just store it separately and avoid hard knocks to keep it pristine.
December Birthstone: Meaning, Symbolism & How to Wear It
The December birthstone is blue topaz — the cool, clear-water gem associated with calm, clarity and easy communication — with turquoise, tanzanite and zircon recognised as December’s traditional alternates. December is one of the months with the widest choice of stones, and at Alya Stone we lead with London blue topaz for its deep, serene blue. If you or someone you love has a December birthday, this guide covers what blue topaz means, where it comes from, the two star signs it belongs to, and the easiest way to wear it every day.
What is the December birthstone?
December is generous with options: its birthstones include blue topaz, turquoise, tanzanite and blue zircon. We lead with London blue topaz — the deepest, slightly steely blue in the topaz family — because its colour is rich yet endlessly wearable. Topaz is an aluminium-silicate mineral that sits at a hard 8 on the Mohs scale, making it one of the more durable coloured stones for everyday jewellery. Its signature London blue tone is drawn out through a standard, stable colour treatment that is widely used across fine jewellery. At Alya Stone we set blue topaz in solid 9k recycled gold, never plated, so its calm blue can be worn and layered for years.
The meaning & symbolism of blue topaz
Blue topaz is a stone of calm and clarity. Its cool, watery colour has long been linked to serenity, honesty, clear thinking and open communication — a steadying, level-headed gem. Topaz more broadly has carried associations with truth and loyalty for centuries, and the blue variety in particular feels like clear skies and still water: a quiet, grounding presence. That makes a blue topaz charm a thoughtful way to mark a fresh start, a calm new chapter, or someone whose steadiness you treasure.
A short history of topaz
Topaz has been prized for thousands of years. Its name may come from the Sanskrit tapas, meaning fire, or from Topazios — the old Greek name for an island in the Red Sea (today’s Zabargad). For much of history, any warm-coloured transparent gem was loosely called “topaz,” which is why golden citrine and topaz were so often confused. True topaz occurs naturally in many colours, including colourless, and the rich London blue shade became a modern favourite as jewellers refined the stable techniques that bring out its depth. Fine topaz is found in Brazil, Sri Lanka, Nigeria and beyond.
December birthstone by star sign
December spans two zodiac signs, and blue topaz’s calm, clear symbolism suits both:
How to wear & gift the December 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 built for exactly that: choose a chain, then clip on the charms that mean something to you. A blue topaz charm makes a serene December birthday gift — doubly lovely for a holiday-season baby — a cool everyday blue that pairs beautifully with both yellow and white gold, or one stone in a growing family-birthstone necklace where each loved one gets their month.
Two ways to wear December at Alya Stone — the vintage-inspired Aster December Topaz Charm with its ribbed-frame setting, or the pavé-set Ellis December Topaz 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: the November birthstone, citrine, and the January birthstone, garnet.
December birthstone FAQ
What is the December birthstone?
December has several birthstones: blue topaz, turquoise, tanzanite and blue zircon. At Alya Stone we lead with London blue topaz for its deep, serene, wearable blue.
What does blue topaz symbolise?
Blue topaz is a stone of calm and clarity, symbolising serenity, honesty, clear thinking and open communication. Its cool blue evokes clear skies and still water.
Why does December have so many birthstones?
Birthstone lists evolved over time and December gathered several cool-blue stones — turquoise and zircon are traditional, while blue topaz and tanzanite are modern additions. All are legitimate; choose by colour or meaning.
What is the December birthstone for Sagittarius and Capricorn?
Blue topaz is shared by both December signs. Its clarity and honesty suit truth-seeking Sagittarius, while its calm, steady symbolism resonates with grounded Capricorn.
Is blue topaz durable enough for everyday wear?
Yes. Topaz ranks 8 on the Mohs hardness scale, so a blue topaz charm is well suited to everyday wear — just store it separately and avoid hard knocks to keep it pristine.