October Birthstone: Opal Jewellery, Meaning & Gift Inspiration

October’s traditional birthstone is Opal — a gemstone celebrated for its remarkable play-of-colour and beautifully individual appearance.

With its mesmerising, ever-shifting hues, it’s a particularly meaningful choice for jewellery, whether you’re searching for an October birthday gift, a distinctive engagement ring or a beautiful piece to wear yourself.

October also has a modern birthstone, Tourmaline, but in this guide we’re taking a closer look at Opal — its colours, meaning and history, and what to consider when choosing Vintage and Antique Opal jewellery.

What Is Opal?

Opal is a unique gemstone formed from hydrated silica. Unlike many gemstones, it doesn’t have a traditional crystal structure. Instead, tiny silica spheres interact with light to create the flashes of colour for which precious Opal is famous — a phenomenon known as play-of-colour.

Those flashes can range from fiery reds and oranges to vivid greens, electric blues and softer pastel tones, changing as the stone moves and catches the light. The pattern and colour play varies from one Opal to another, meaning every stone has its own distinctive appearance.

Why Opal Makes Such a Special October Birthstone

It’s this natural variation that makes choosing Opal jewellery feel particularly personal. No two stones will display their colours in quite the same way, so every piece has something different to offer.

That makes Opal a beautiful choice for an October birthstone gift. Rather than simply choosing a gemstone associated with someone’s birth month, you can look for an Opal whose colours, setting and style feel right for the person who will wear it.

And birthstone jewellery doesn’t have to be reserved for birthdays. An Opal could mark a milestone, become a meaningful engagement ring, celebrate a 14th wedding anniversary, or simply offer an October-born jewellery lover a way to wear their own birthstone.

For those drawn to Vintage and Antique jewellery, there’s another layer of individuality too: pairing a naturally unique gemstone with a one-off piece from another era means finding something that really is their own.

What Colour Is the October Birthstone?

Unlike many birthstones, Opal doesn’t have one defining colour. Depending on the variety, an Opal can have a white, dark, transparent or fiery-toned appearance, while precious Opal can display flashes of multiple colours as it catches the light.

That means October birthstone jewellery can look remarkably different from one piece to the next — from soft, milky Opals with subtle flashes of colour to dramatic stones alive with vivid reds, greens and blues.

Some of the best-known Opal varieties include:

• White Opal – A pale or light body colour, often displaying flashes of colour across its surface.
• Black Opal – A darker body tone that can provide a striking background for vivid play-of-colour.
• Fire Opal – Known for its warm yellow, orange or red body colour; some examples also display play-of-colour.
• Boulder Opal – Precious Opal that forms naturally within its host rock, usually ironstone, which remains part of the finished stone.
• Crystal Opal – Transparent to semi-transparent precious Opal through which its play-of-colour can be seen.

For an October birthstone gift, this variety offers another opportunity to make the choice personal: you can look for the colours and style that most suit the person who will wear it.

October Birthstone Meaning: What Does Opal Symbolise?

Over the centuries, Opal has been associated with ideas including hope, love, creativity and good fortune. Its ever-changing colours have also helped make it a symbol of individuality and imagination.

Those associations can add another layer of meaning when Opal is chosen as a gift. For someone born in October, it offers a personal connection to their birth month, while its unique appearance makes each stone feel individual to the person wearing it.

Opal is also traditionally associated with the 14th wedding anniversary, making Opal jewellery a meaningful way to mark fourteen years of marriage.

October Birthstone Jewellery & Gift Ideas

Whether you’re choosing for an October birthday, celebrating a milestone or looking for a meaningful gift simply because you know someone loves Opal, there are plenty of ways to wear this distinctive birthstone.

Opal Rings

An Opal ring puts the gemstone’s play-of-colour centre stage and can make a particularly personal birthday or milestone gift. From delicate Antique designs to more statement-making Vintage pieces, the setting and era can completely change the look of the stone.

For something extra special, Opal and Diamond jewellery is a beautiful combination. The sparkle of Diamond can provide a striking contrast to Opal’s softer, shifting colours, making it especially suited to significant gifts and occasion pieces.

Opal Earrings

Opal earrings can be a lovely choice when you’re buying a birthstone gift but don’t know the recipient’s ring size. Depending on the design, they can offer anything from a subtle flash of colour for everyday wear to a more decorative Vintage or Antique look.

Opal Necklaces & Pendants

An Opal pendant or necklace keeps the gemstone close while allowing its colours to catch the light as it moves. It can be an easy-to-wear choice for an October birthday gift and works particularly well for someone who doesn’t often wear rings.

Opal Brooches & Bracelets

Don’t feel limited to rings, earrings and necklaces — Vintage and Antique collections can also reveal Opal brooches, bracelets and wonderfully unusual period pieces and one-off finds.

Choosing the Right Opal

The gemstone itself is only part of the decision. The metal, setting and any accompanying gemstones can all influence the overall look of an Opal piece. Yellow and rose gold can complement its warmer tones, while white metals can create a cooler contrast.

Most importantly, look at the individual Opal. Its colours and pattern are what make the stone unique, so the “right” piece may simply be the one that immediately catches your eye — or reminds you of the person you’re choosing it for.

Explore Opal Jewellery

Why Choose Vintage or Antique Opal Jewellery?

Opal and Vintage jewellery make a particularly natural pairing. Because every Opal has its own pattern and play-of-colour, older pieces often feel wonderfully individual — combining a unique gemstone with a design from another era.

Part of the pleasure of exploring Vintage and Antique Opal jewellery is discovering how differently the gemstone has been used across the decades. In the Cavendish collection, we’ve seen Opal appear alongside Diamonds, Rubies, Emeralds, Garnets and even Tourmaline, in pieces spanning the Victorian and Edwardian eras through Art Deco and later 20th-century design.

One particularly unusual example is our Antique Edwardian Water Opal & Green Tourmaline Necklace, which brings together both of October’s birthstones in a single piece of Antique jewellery. It’s a wonderful example of the unexpected gemstone combinations that can be discovered when exploring jewellery from another era.

These combinations can bring out very different qualities in the Opal. Opal and Diamond jewellery is a particularly beautiful example, with the sparkle of Diamond providing a striking contrast to Opal’s softer, shifting play-of-colour, while gemstones such as Emerald, Ruby and Garnet can introduce richer colour contrasts.

Opal also has a fascinating connection to Victorian jewellery, reflecting an era in which the gemstone was admired and worn by Queen Victoria herself. Vintage pieces offer yet more ways to wear Opal, as changing jewellery styles brought different settings, shapes and gemstone combinations.

For today’s collector or jewellery lover, that means there isn’t one particular “Opal look” to choose from — part of the pleasure is discovering the era, setting and individual stone that speaks to you.

And there’s something rather special about an Opal that has already survived for generations. Choosing a Vintage or Antique piece allows its story to continue, while giving you jewellery that combines the natural individuality of Opal with the history and craftsmanship of the piece itself.

Can Opal Be an Engagement Ring?

Yes — Opal can make a beautiful and highly individual engagement ring, particularly if the gemstone has personal significance. For someone born in October, choosing their birthstone can add another layer of meaning to an engagement ring, while its ever-changing play-of-colour offers a distinctive alternative to more traditional choices.

However, lifestyle is an important consideration. Opal typically measures around 5–6.5 on the Mohs hardness scale, making it softer and more susceptible to scratches and knocks than traditional engagement-ring gemstones such as Diamond or Sapphire.

That doesn’t mean an Opal engagement ring can’t be worn and enjoyed. It simply means it may be better suited to someone who is comfortable taking a little extra care with their jewellery — removing it for activities where it could be knocked, scratched or exposed to harsh conditions.

For some people, that practical consideration will lead them towards a harder gemstone for an everyday engagement ring. For others, the distinctive beauty and personal meaning of Opal will make it worth the additional care.

And if you love jewellery with a history, a Vintage or Antique Opal ring offers something even more distinctive: a one-of-a-kind engagement ring from another era, ready to become part of a new story.

Opal Through the Ages: A Gemstone with History

Opal has been treasured for centuries. In Ancient Rome, it was particularly prized for its ability to display many colours within a single stone, and became associated with love and hope.

The gemstone also has a fascinating place in British jewellery history. Queen Victoria was a notable admirer of Opal, and examples of Opal jewellery from the Victorian era are still treasured and worn today.

Opal continued to find favour in royal jewellery long after the Victorian era. During her 1953–54 royal tour of Australia, Queen Elizabeth II was presented with the spectacular Andamooka Opal — a 203-carat Australian Opal set into a palladium and diamond necklace, with matching earrings.

That Victorian connection is particularly fascinating when choosing Antique Opal jewellery today. Pieces from the era allow us to see how jewellers of the period showcased the stone’s natural play-of-colour, often combining Opals with precious metals and other gemstones in designs that have survived for generations.

For lovers of Vintage and Antique jewellery today, that long history adds another layer to Opal’s appeal: an October birthstone that has been worn, gifted and treasured for centuries.

How to Care for Opal Jewellery

Opal is a relatively soft gemstone, typically measuring around 5.5–6.5 on the Mohs hardness scale, so it needs a little more care than harder gemstones such as Sapphire or Diamond — particularly when worn in a ring.

To help protect your Opal jewellery:

• Avoid knocks and scratches – Take extra care during activities where your jewellery could come into contact with hard surfaces.
• Avoid harsh chemicals and sudden temperature changes – Both can potentially damage Opal.
• Clean gently – Use mild soapy water and a soft cloth rather than abrasive cleaning products.
• Store separately – Keep Opal jewellery away from harder gemstones that could scratch its surface.
• Avoid ultrasonic and steam cleaners – Gentler cleaning methods are more appropriate for Opal.
• Check older settings – If you own Vintage or Antique Opal jewellery, have delicate settings and claws checked periodically by a jeweller.

With thoughtful wear and care, Opal jewellery can be enjoyed for generations.

Find Your Own One-of-a-Kind Opal

Part of the pleasure of choosing Opal jewellery is finding the stone that catches your eye. With every Opal displaying its own combination of colour and pattern, the right piece can feel wonderfully personal — whether you’re choosing an October birthstone gift, marking a special occasion or simply looking for something you’ll love wearing.

At Cavendish, our collection includes one-off Vintage and Antique Opal jewellery, each piece individually chosen for its beauty, character and craftsmanship. And because our jewellery is one of a kind, you never quite know what you might discover.

Browse our latest Opal jewellery online, or visit us on Stonegate in York, where you’ll find even more Vintage and Antique pieces that aren’t currently available on our website.

Looking for an October birthstone gift?
Discover our current Opal jewellery collection.

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Discover More Birthstones

Looking beyond October? Explore our complete Birthstone Jewellery Guide to discover birthstones throughout the year, with inspiration and expert advice for choosing meaningful Vintage & Antique jewellery.

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