20 Jul 2026 — by Flawless Fine Jewellery — Reading time 3 minutes
Spinel Gemstone Jewellery: The Ultimate Buying Guide
Everything you need to know about buying spinel—whether you’re choosing a loose gemstone, commissioning a bespoke piece or selecting ready-to-wear jewellery.
Spinel Gemstone Jewellery: The Ultimate Buying Guide
Introduction
For centuries, some of the world's most famous "rubies" were actually spinels. Today, this remarkable gemstone has finally earned recognition in its own right—and for anyone looking for exceptional colour, rarity and individuality, spinel has become one of the jewellery world's most exciting choices.
By the end of this guide, you'll know…
➤ How to recognise an exceptional spinel
➤ Whether to buy a loose stone or finished jewellery
➤ Which colours offer the best value
➤ How settings affect sparkle
➤ Which jewellery styles suit different lifestyles
➤ What jewellers really look for
This guide is for you if...
➤ You're considering your first piece of spinel jewellery.
➤ You're comparing spinel with ruby, sapphire, or diamond.
➤ You're buying an engagement ring or a meaningful gift.
➤ You're interested in a loose spinel for a bespoke commission.
➤ You'd like to understand what makes one spinel more valuable than another.
What You'll Learn in This Guide
- Spinel at a Glance
- Why Spinel Is One of Jewellery's Best-Kept Secrets
- Why Choose Spinel Jewellery?
- Loose Spinel or Finished Jewellery?
- How to Choose a Spinel You'll Still Love in 20 Years
- Understanding Spinel Colours
- Choosing the Perfect Setting
- Which Precious Metal Should You Choose?
- Caring for Spinel Jewellery
- Frequently Asked Questions
- Before You Buy: A Quick Checklist
- Final Thoughts
The Gem Behind the Jewellery
Spinel's story begins deep beneath the Earth's surface, where immense heat and pressure transformed magnesium- and aluminium-rich rocks into beautiful crystals over millions of years. These remarkable conditions created a gemstone renowned for its exceptional durability, vivid colour, and brilliant sparkle.
Interestingly, spinel frequently appears in the same marble deposits as ruby. Before the science of gemmology developed, the two gemstones looked so alike that they were frequently mistaken for one another.
Spinel Facts at a Glance
Let’s start with a quick introduction to the qualities that make spinel such a great choice for fine jewellery.
| Mineral family | Spinel, magnesium aluminium oxide |
| Hardness | 8 on the Mohs scale |
| Crystal system | Isometric (cubic) |
| Transparency | Transparent to translucent |
| Cleavage | None |
| Common treatments | Usually untreated |
| Birthstone | August (modern) |
Spinel’s hardness and lack of cleavage help it withstand the bumps and knocks that come with everyday wear, making it particularly well suited to engagement rings and pendants. Its cubic crystal structure and optical properties also contribute to its clean, crisp sparkle, sharp facet reflections, and lively brilliance.
While these technical properties are fascinating, the qualities most of our customers notice are its vibrant colour, exceptional sparkle and individuality.
Why Spinel Is One of Jewellery's Best-Kept Secrets
| Gemstone | Mineral | Mohs Hardness | Typical Treatments | Signature Qualities |
| Spinel | Magnesium aluminium oxide | 8 | Usually untreated | Exceptional brilliance, vibrant natural colours, and rarity in jewellery |
| Ruby | Corundum | 9 | Heat treatment is common | Rich red colour and enduring appeal |
| Sapphire | Corundum | 9 | Heat treatment is common | Outstanding durability and extensive range of colours |
| Emerald | Beryl | 7.5-8 | Oiling is common | Distinctive green colour and natural inclusions |
| Diamond | Carbon | 10 | Usually untreated* | Exceptional hardness and outstanding brilliance |
When rubies turned out to be spinels
You might have heard of the Black Prince’s Ruby - a spectacular 170-carat red gemstone which takes pride of place in the British Imperial State Crown.
For more than six centuries, royalty admired this extraordinary gemstone for its rich crimson colour, exceptional clarity, and remarkable brilliance. It even accompanied King Henry V into the Battle of Agincourt in 1415, cementing its place in British history.
But did you know the Black Prince’s Ruby is actually a spinel?
This royal gemstone isn't the only famous example of mistaken identity. The Timur Ruby, a spectacular 352.54-carat gemstone, was also believed to be a ruby for centuries before being identified as a spinel. Another remarkable example is the Côte de Bretagne Spinel, which was carved into the shape of a dragon and is now preserved among the French Crown Jewels.
💎 Did You Know? It is incredibly rare to find an eye-clean ruby over 1-carat. Spinels, however, naturally grow with exceptional clarity. When you see a large, perfectly eye-clean red gem from antiquity, history shows it is almost always a spinel, as a ruby of that size and clarity rarely exists in nature.
Why spinel is becoming so popular
So, how is it that spinel deceived some of the world’s most distinguished royal jewellers?
For centuries, mineralogists classified gemstones almost entirely by colour rather than chemical composition or crystal structure.
Because fine spinels can display the same intense crimson saturation, brilliant lustre, and exceptional sparkle that characterises the most sought-after Burmese rubies, it was almost impossible to distinguish the two without advanced testing.
It wasn’t until 1783 that mineralogists discovered that rubies and spinel were two distinctly different gemstones with different crystal structures. Today, spinel is no longer admired because people think it's a ruby. It has earned recognition in its own right as one of the world's most captivating, coloured gemstones, prized for its vibrant natural colour, exceptional brilliance and rarity in fine jewellery.
Why jewellers love working with spinel
Just like diamond, spinel is singly refractive, which means it displays consistent, vibrant colour from all angles, paired with exceptional clarity and brilliance.
There are several reasons we call spinel the ‘Jeweller’s Gemstone’. It's one of the few gemstones that combine vivid natural colour and everyday durability without relying on routine treatment. But spinel’s sparkle is often what captures our hearts—even before its colour.
To us, spinel represents a unique opportunity to offer our customers a gemstone that’s bold, rare, and slightly unexpected—without the price tag of more mainstream options.
💎 Did You Know? Spinel forms naturally in almost every colour, making it the perfect choice for those looking for a piece of jewellery to reflect their personality.
Why Choose Spinel Jewellery?
So, what is it that makes spinel such a compelling choice? Here are some of the reasons so many of our customers are falling in love with this remarkable gemstone.
➤ Their colour is exceptional. From vivid red and electric pink, to rich cobalt blue and deep black, there’s a spinel to suit every style.
➤ Unlike some other gemstones, most fine spinels require no treatment to look their brilliant best.
➤ Their hardness makes them suitable for everyday wear.
➤The same vivid brilliance that once led kings to mistake spinel for ruby now makes it one of jewellery's most captivating hidden gems—perfect for creating a piece of bespoke jewellery.
Loose Spinel or Finished Jewellery?
At Flawless Fine Jewellery, you can choose from loose spinel gemstones or ready-made spinel rings.
Why choose a loose spinel?
Each spinel stone has its own unique character. If you’re drawn to the idea of creating a special piece of jewellery that is completely your own, choosing your own loose spinels could be the right option for you.
Loose spinels are perfect for:
➤ bespoke jewellery
➤ collectors
➤ family heirlooms
➤ meaningful jewellery and engagement rings
➤ choosing your exact gemstone
Why buy finished jewellery?
Our selection of finished spinel jewellery consists of time-honoured designs that celebrate spinel’s dazzling colour and sparkle at its best.
Finished spinel jewellery is perfect for:
➤ gifts
➤ engagement rings when you don’t want to wait
➤ immediate wear
Can you create bespoke jewellery from a loose spinel?
One of the best ways to create a piece of spinel jewellery that is uniquely yours is to design your own ring.
At Flawless Fine Jewellery, you can either choose one of our existing ring designs to pair with your loose spinel, or book a consultation to design your own ring alongside one of our Hatton Garden jewellers.
🔍 From the Jeweller's Bench
Every gemstone we consider has already met our standards for colour, cut, and craftsmanship. But technical quality is only part of the story. We might look with trained eyes—but we always choose with our hearts.
How to Choose a Spinel You'll Still Love in 20 Years
We always encourage our customers to choose their spinel the way we buy ours—with their eyes and their heart.
When we first examine a spinel, we don’t start by asking how many carats it weighs. We place it under neutral lighting and look for liveliness. Then we ask: does the colour remain vivid as the stone moves? Are there areas that go dark? Is the stone bright and does it return light evenly? Only after we’ve assessed its visual performance do we consider the finer details.
These are our top tips to choose a spinel you’ll love forever:
Buy colour before size
Colour is something you'll appreciate every time you wear your spinel. Don’t just choose the biggest gem; choose the stone you can’t stop looking at—the one that makes you smile. If a spinel is vivid and brilliant, it will usually bring more enjoyment than a larger stone with lifeless colour.
Brilliance matters more than clarity
Many spinels contain tiny natural inclusions, but if these aren't visible without magnification, they rarely affect how the gemstone looks once it's set in jewellery. Brilliance and fire are what will keep catching your eye. Those bright flashes of colour that make your stone feel alive.
A good cut brings your spinel to life
If colour is what first catches your eye, cut is what keeps your attention.
A well-cut spinel allows light to travel through the gemstone and return to your eye, creating the lively brilliance that makes spinel so captivating. Even a beautifully coloured stone can appear dull or lifeless if it's poorly cut.
If colour is what first catches your eye, cut is what keeps your attention.
A well-cut spinel allows light to travel through the gemstone and return to your eye, creating the lively brilliance that makes spinel so captivating. Even a beautifully coloured stone can appear dull or lifeless if it's poorly cut.
What to watch out for when you’re choosing your spinel:
Windowing – when a gemstone is cut too shallow, light will pass straight through the stone rather than being reflected back to your eye. The result is a pale, transparent area in the centre of the stone that can make the colour appear washed out.
Extinction – often associated with overly deep or poorly proportioned cuts, extinction is when a stone appears unusually dark. Some extinction is normal, but if large portions of the spinel look black, then the gemstone may lack sparkle.
Symmetry – a gemstone should be balanced in order to shine. Well-aligned facets help light move evenly through the gemstone, whilst poor symmetry can make a stone look uneven or reduce its brilliance.
The shape of the cut will also introduce its own character and may influence what you choose:
Oval – Elegant and often maximises visual size.
Cushion – A timeless shape that complements spinel's brilliance.
Round – Offers balanced sparkle and classic appeal.
Emerald cut – Highlights colour and clarity with a sophisticated, understated look.
Pear and marquise – Distinctive shapes that create graceful, elongated designs.
Should your spinel be certified?
Independent certification provides reassurance that a gemstone has been examined by a recognised gemmological laboratory. Depending on the gemstone, certification can confirm details such as whether it’s natural, any treatments that have been used, and, in some cases, its geographical origin.
At Flawless Fine Jewellery, our loose gemstones are independently certified and ethically sourced, giving you confidence in their authenticity and quality. If you're considering a particular spinel, we're always happy to explain the certification that accompanies it and what the report tells you about your gemstone.
How much should you spend?
The right budget isn't determined by what you "should" spend—it's determined by the kind of spinel and jewellery you're looking for. Whether you're buying your first piece or investing in an exceptional gemstone, understanding what your budget can achieve helps you make an informed decision.
We have beautiful spinel gemstones available for every budget.
Under £1,000
Violet Oval Cut Spinel Gemstone
This beautiful spinel gemstone has a subtle colour overall with eye-catching purple flashes of brilliance.
Opt for an east-west orientation with a feminine twist with this gorgeous pink spinel.
£1,000 to £2,500
Blue Emerald Cut Spinel Gemstone
The royal blue of this stunning spinel is perfect for those who like traditional style. Pair it with a diamond halo to accentuate its colour further.
Grey Round Cut Spinel Gemstone
The simple round cut of this grey spinel really accentuates its sparkle.
Over £2,500
Pink Heart Shaped Spinel Gemstone
This heart-shaped pink spinel is the perfect option for a romantic engagement ring.
Boasting a beautiful emerald cut, this red spinel would look stunning at the heart of a trilogy ring.
Understanding Spinel Colours
Choosing a gemstone can be daunting, especially if it’s for an engagement ring or another special piece of jewellery.
Let’s start where we always like to begin – with colour.
Red Spinel
For centuries, red spinel was admired as one of the world’s finest rubies. Today, its vibrant colour and exceptional brilliance make it one of the most valuable and sought-after varieties of spinel.
Best suited to…
Red spinel is ideal for those who appreciate timeless elegance but want something a little less conventional than a ruby. It appeals to people who value exceptional craftsmanship, fascinating history, and a gemstone that feels both luxurious and individual.
Beautiful in...
Red spinel works wonderfully in almost every type of jewellery, but it is particularly striking in:
➤ Solitaire rings, where its colour becomes the focal point.
➤ Halo designs, where surrounding diamonds enhance its richness.
➤ Vintage-inspired settings that complement its remarkable history.
➤ Pendants that allow larger gemstones to be admired from every angle.
Best paired with...
Yellow Gold – Creates a rich, classic look that enhances the warmth of the gemstone.
White Gold or Platinum – Offers crisp contrast, allowing the vivid red colour to take centre stage.
Rose Gold – Produces a softer, romantic appearance, particularly with slightly pinkish-red spinels.
Blue Spinel
Unlike sapphire, whose beauty often comes from its velvety depth, blue spinel has a lively sparkle that gives the gemstone a crisp, almost electric appearance. Its colours range from delicate icy blues to deep cobalt and vivid royal blues.
Best suited to…
Those who want all the sophistication of a classic blue gemstone paired with dramatic sparkle.
Beautiful in...
➤ Contemporary solitaire rings
➤ East-west settings
➤ Minimalist pendants
➤ Platinum engagement rings
Best paired with...
Yellow Gold – creates a striking contrast for a more classic look.
White Gold or Platinum – enhances the gemstone’s cool, vibrant tones.
Pink Spinel
Beautiful, feminine, and fun, pink spinel ranges from delicate blush tones to vivid hot pinks. Even softer shades appear bright and full of life due to their brilliance.
Best suited to...
Those looking for something feminine, vibrant, and full of personality.
Beautiful in...
➤ Halo rings
➤ Dress rings
➤ Pendants
➤ Delicate earrings
Best paired with...
Rose Gold – Creates a soft, harmonious palette.
White Gold – Makes vivid pinks really stand out.
Mahenge Spinel
Best suited to...
Mahenge spinel has become one of the most sought-after coloured gemstones for those who appreciate rarity and exceptional colour.
Beautiful in...
➤ Statement solitaires
➤ Bespoke engagement rings
➤ High-end dress rings
Best paired with...
Rose Gold – Enhances its warmth and romance.
White Gold – Creates dramatic contrast.
Purple & Lavender Spinel
Purple and lavender spinels are all about subtlety. Rather than demanding attention, they reward closer inspection, revealing subtle shifts of colour as they move through the light.
Best suited to...
Those looking for something graceful, artistic, and slightly unexpected.
Beautiful in...
➤ Vintage-inspired rings
➤ Delicate pendants
➤ Nature-inspired bespoke jewellery
Best paired with...
Rose Gold – Creates warmth and softness.
White Gold – Gives a fresh, contemporary feel.
Grey Spinel
Modern and understated, grey spinel can display silvery, smoky, or graphite tones that make it endlessly interesting.
Best suited to...
Those who appreciate modern design, minimalist style, and jewellery that's endlessly sophisticated.
Beautiful in...
➤ Bezel settings
➤ Contemporary engagement rings
➤ Men's jewellery
➤ Sculptural designs
Best paired with...
White Gold or Platinum – creates a refined monochromatic look.
Black Spinel
Confident, dramatic, and effortlessly stylish, black spinel’s polished, mirror-like appearance makes it a favourite for contemporary jewellery and bold statement pieces.
Best suited to...
Those who prefer clean lines, modern design, and jewellery with strong visual impact.
Beautiful in...
➤ Signet rings
➤ Men's rings
➤ Contemporary pendants
➤ Bold cocktail rings
Best paired with...
White Gold or Platinum – to create a stunning monochrome palette.
Yellow Gold – for a warmer, more dramatic look.
💎 Expert Tip
If you want to know which colour is right for you – trust yourself. Choose the colour you fall in love with rather than chasing rarity.
Choosing the Perfect Setting
Once you’ve found the right gemstone, the next step is deciding how you’d like to wear it.
The perfect setting will transform your spinel from a beautiful stone into an intensely personal piece of jewellery.
Solitaire: Let the Colour Speak for Itself
A solitaire setting allows your spinel’s colour to shine without distraction. It’s an excellent choice whether you’ve chosen a vivid Mahenge pink, a rich cobalt blue, or an elegant grey.
Halo: Make the Colour Feel Even More Vibrant
It’s well-known that halo settings can make the central gemstone seem larger. With spinel, they can do something even more interesting. A halo of white diamonds creates contrast, making richly coloured spinels appear even more saturated and lively.
Trilogy: A Design Rich in Meaning
The trilogy setting has long been associated with the past, present, and future, making it one of the most meaningful designs for engagement rings and anniversary gifts. Whether you opt for three spinel stones, or want to combine other gemstones such as diamond, ruby, or sapphire, this is a design that will tell a story for years to come.
This 2.50 ct Emerald Cut Red Spinel Engagement Ring is a perfect example of the trilogy design.
Bezel: Contemporary Style for Everyday Wear
A bezel setting can make a spinel look as though it's glowing from within. It's one of our favourite settings for customers who want everyday elegance with a contemporary edge.
Vintage settings: A Style With Timeless Character
Few gems have a history as fascinating as spinel. Vintage-inspired settings complement that heritage beautifully, giving your jewellery a sense of timeless romance. Details such as milgrain edges, hand engraving, and ornate claws pair especially well with rich red and pink stones.
Contemporary designs: Jewellery That’s Personal Not Conventional
Spinel is the perfect gemstone for those looking for something individual. Asymmetrical settings, east-west orientations, open galleries, and sculptural designs all work beautifully with this stunning gemstone.
🔍 From the Jeweller's Bench
We’re often asked which setting will make a spinel sparkle the most. While an open setting will allow more light to reach the gemstone, a well-cut spinel will sparkle no matter what setting you choose.
Read more about how to choose engagement rings in our guide to style, stone, and shape.
Which Precious Metal Should You Choose
You’ve found your gemstone and your setting; let’s look at the options for precious metals.
While certain combinations are classic for good reason, one of the joys of spinel is its versatility. At Flawless Fine Jewellery, we know that the best pairing is simply the one that best complements the spinel that’s captured your heart.
Yellow gold is a timeless choice that lets rich colours shine. It’s an excellent choice if:
➤ You want a traditional style that goes beyond fashion
➤You’ve fallen in love with a red, pink, or purple spinel and want to create a combination that feels luxurious and full of character
➤You’re designing a bespoke ring that you want to hand down to future generations
➤You’re drawn to yellow gold’s warm glow and want your new piece of jewellery to fit with the rest of your collection
An alloy of yellow gold, white gold is the ideal choice if you:
➤ Love a bright, contemporary look
➤ Want your spinel’s stunning colour to take centre stage
➤ Are drawn to cool-toned spinel, such as blue, grey, or lavender
➤ Want to design a modern engagement ring
➤ Already wear silver or white metal jewellery
➤ Want a piece of jewellery that will suit both casual and formal occasions
➤ Don’t mind a little bit of maintenance to keep its rhodium plating looking bright and white
White gold’s bright, white appearance is in part created by its rhodium plating. As this plating naturally wears over time, the white gold develops a softer, warmer tone. Some of our customers love this subtle change, while others prefer to have their jewellery re-rhodium plated to restore its bright white finish.
We can arrange for the rhodium coating to be refreshed at either our London or Manchester stores.
If you’re looking for something a little less traditional, rose gold’s pretty blush tones are perfect if:
➤ You love a soft, romantic style and want to create an elegant and harmonious palette with pink, lavender, or Mahenge spinel
➤ You want something a little more individual that stands out from the norm
➤ You’re designing a ring with a halo setting or a nature-inspired theme
➤ You want your precious metal to blend beautifully with your spinel
Prized for its strength, weight, and naturally white appearance, platinum is for you if:
➤ You want a piece of jewellery that will accompany you through decades of everyday wear
➤ You appreciate understated luxury
➤ You’re investing in exceptional craftsmanship, and you want your spinel to steal the show
➤ You want a precious metal that will complement any colour spinel, but especially blue, fine red, or grey
Caring for Spinel Jewellery
So, you’ve found your perfect piece of spinel jewellery, but how do you keep it looking as good as the day you first tried it on?
Clean your jewellery regularly
Your jewellery might not look dirty, but even a thin layer of hand cream, soap, or dust can dull your spinel’s sparkle.
To clean your spinel jewellery:
1- Fill a bowl with warm water and add a few drops of mild washing-up liquid.
2- Leave the jewellery to soak for 5–10 minutes.
3- Use a soft toothbrush to gently clean behind the gemstone and around the setting, where oils and everyday dirt can build up.
4- Rinse thoroughly in clean water.
5- Dry with a soft, lint-free cloth.
You should avoid harsh chemicals and use ultrasonic cleaners with care. Regular, gentle cleaning will help your spinel look its best.
Store your jewellery carefully
Although spinel is a hard gemstone, it can still scratch softer gemstones—and harder gemstones, such as diamonds, can scratch spinel.
Store your jewellery:
➤ In a soft pouch or lined jewellery box.
➤ Separately from other pieces where possible.
➤ Away from loose diamonds or other harder gemstones.
Check the settings often
Spinel is perfect for everyday wear, but it’s still worth checking the setting occasionally.
Look out for:
➤ Loose claws
➤ Movement in the gemstone
➤Worn settings
➤ Signs of damage after an accidental knock
Use our professional inspection service
Our commitment to you doesn’t stop once we’ve completed a sale. When you buy your jewellery from us, we’ll give you a lifetime of complimentary cleaning and inspection to ensure the gemstones stay safe and secure.
Frequently Asked Questions
Q: Does origin matter?
The short answer is yes—but probably not in the way you might expect.
Like ruby and sapphire, spinel is found in only a handful of locations around the world. Over centuries, certain regions have earned reputations for producing spinels with particularly desirable colours and exceptional quality.
For example:
➤ Myanmar (Burma) is celebrated for producing some of the world's finest rich red spinels.
➤ Vietnam is renowned for vivid reds, vibrant pinks, and the exceptionally rare cobalt-blue spinels prized by collectors.
➤ Tanzania is best known for the striking neon pink and reddish-pink Mahenge spinels that have captivated the jewellery world in recent years.
➤ Sri Lanka produces a beautiful range of pastel pink, lavender, blue, and grey spinels, often with excellent clarity and brilliance.
Collectors may value gemstones from particular localities, especially when they produce colours that are difficult to find elsewhere. However, origin alone doesn't determine a spinel's beauty or value. An exceptional spinel from a lesser-known source will always be more desirable than an average stone from a famous location.
When choosing a spinel, we'd always encourage you to look at the gemstone with your own eyes first. Colour, brilliance, and the way it makes you feel will always matter more than the country it came from.
Q: Is spinel rarer than ruby?
Fine spinels are considerably rarer than most people realise. They are among the world’s most uncommon coloured gemstones, making them an exciting discovery for anyone looking for something beautifully individual.
Q: Is spinel suitable for engagement rings?
Yes—spinel is an excellent choice for an engagement ring, particularly for couples looking for something a little different from the traditional diamond, ruby or sapphire.
Why couples choose spinel
✔ A distinctive alternative to traditional engagement gemstones
✔ Durable enough for everyday wear
✔ Available in a beautiful range of natural colours
✔ Ideal for bespoke ring designs
✔ A meaningful choice that reflects individuality
Q: What is spinel?
Spinel is a natural gemstone valued for its exceptional brilliance, vibrant colours and durability. Once mistaken for ruby by royalty and collectors, it is now recognised as a distinct gemstone in its own right. Available in colours including red, blue, pink, purple, grey and black, spinel is an increasingly popular choice for fine jewellery thanks to its beauty, rarity and suitability for everyday wear.
Q: Can I commission bespoke jewellery with a loose spinel?
Yes. Creating your own bespoke jewellery with your chosen spinel stone is a perfect way to create something special. As well as our bespoke ring designer, you can use our website to design unique spinel pendants and earrings.
Before You Buy: A Quick Checklist
□ Do I genuinely love this colour?
□ Will I enjoy wearing it every week?
□ Does the setting suit my lifestyle?
□ Does it sparkle beautifully in daylight?
□ Have I considered the metal colour?
□ Would I still choose this design in ten years?
□ Am I buying quality rather than size?
□ Do I trust the jeweller I'm buying from?
Final Thoughts
The perfect spinel isn't simply the rarest or the most expensive—it's the one that feels right for you. Whether you choose a loose gemstone to create something bespoke or fall in love with a finished piece, a carefully chosen spinel is more than jewellery. It's a piece you'll enjoy wearing and a story you'll carry with you for years to come.
Need help choosing ?
We're happy to help