Tourmaline comes in more colour varieties than almost any other gemstone. Pink tourmaline (rubellite in its deeper reds), watermelon, paraiba and green are the main ones. Paraiba, a copper-bearing neon blue-green, is the rarest and by far the most expensive. Pink and green stones are the most widely available and the easiest to wear.
Tourmaline Colours
Tourmaline isn't a single gem with a single look, so the colour you pick shapes the price, the rarity and the kind of jewellery it suits.
| Colour variety | Body colour | Cause of colour | Rarity | Price tier | Best cut | Who it suits |
|---|---|---|---|---|---|---|
| Pink tourmaline / rubellite | Soft pink to raspberry and red-pink | Manganese (with natural radiation exposure in the ground) | Pink: widely available. Deep rubellite: scarcer | Pink: accessible to mid. Rubellite: mid to high | Oval, cushion, pear | Anyone wanting a romantic, easy colour |
| Watermelon | Pink centre with a green rim, or the reverse | Manganese (pink) and mainly iron (green) in one crystal | Uncommon in good, well-defined bands | Mid | Thin slice, or a cut that keeps the bands | Fans of playful, unusual stones |
| Paraiba | Electric neon blue to blue-green | Copper, with manganese | Very rare | Highest of all tourmaline | Oval, pear, round | Collectors and special-occasion buyers |
| Green / verdelite | Pale mint to deep forest green | Iron, sometimes chromium and vanadium | Common in standard shades. Rich chrome green: rarer | Accessible to mid | Emerald cut, oval, cushion | Anyone who loves green and wants a tough, usually clean stone |
| Black / schorl | Opaque black | Iron | Very common | Lowest | Cabochon, beads, simple shapes | Minimalist and everyday wearers |
| Indicolite | Blue, from grey-blue to deep teal | Iron, sometimes titanium | Uncommon | Mid to high | Emerald cut, oval | Those drawn to blue stones that aren't sapphire |
Prices in the table are relative tiers, not quotes. Size, saturation and cut all move a stone up or down within its tier.
What Is Tourmaline?
Tourmaline isn't one mineral. It's a group of complex boron-bearing silicates (borosilicates), and several species sit inside it. The one you'll meet most often in jewellery is elbaite, which produces the pinks, greens, blues and bi-colours. Other species, such as schorl (black) and dravite (brown), turn up too, but mostly in cheaper or more rugged uses.
The name is generally traced to a Sinhalese word, often given as turamali, which is said to mean "stone of mixed colours". That fits. Chemistry shifts very slightly from one part of a crystal to another, and the colour shifts with it, so a single tourmaline can be pink at one end and green at the other.
Two properties matter when you're buying:
- Hardness - Mohs 7 to 7.5. That's a touch harder than quartz, and good enough for rings if you look after them sensibly.
- Pleochroism - Tourmaline shows different colour or depth of colour depending on the angle you view it from. Gem cutters orient the stone so the most attractive colour faces up. It's also why a tourmaline can look slightly different from one side of the ring to the other.
For the full property sheet, our tourmaline gemstone guide covers chemistry, formation and sources in depth. This guide stays focused on colour.
Pink Tourmaline and Rubellite
Pink is the variety most people mean when they type "pink tourmaline", and it's the friendliest entry point into the family. Colours run from a pale, almost blush pink through to vivid hot pink and a purplish raspberry.
Pink Tourmaline Versus Rubellite
This is the question buyers ask most, and the honest answer is that the line is a matter of trade convention rather than a hard scientific boundary. Both are elbaite, and both get their pink-to-red colour from manganese.
- Pink tourmaline - The lighter, softer end: baby pink through to a bright, clear pink.
- Rubellite - The deep end: strong red-pink, raspberry or ruby-red. Many labs and dealers expect the colour to hold its red character in different light, not slip towards brown or purple.
Where one stops and the other starts is partly a judgement call, which is why two sellers can describe the same stone differently. If a description matters to you, ask what the seller means by it, and check whether a gem lab report is available.
Rubellite also tends to be more included than lighter pink stones. Tiny fractures and tube-like inclusions are common, and most buyers accept them as long as the stone looks lively and isn't weakened. A cleaner rubellite is worth noticeably more.
What Pink Tourmaline Costs
Pink tourmaline is one of the more approachable coloured gemstones. A pale to medium pink sits in the accessible tier, whereas a vivid, saturated stone with good clarity moves up. Deep, clean rubellite sits higher again. What sets the price is covered in the value drivers section below.
As a rough UK guide (indicative only, prices vary with size, saturation, clarity and the day's market):
- Sterling silver pink tourmaline ring, small stone (around 0.5-1 ct) - Typically around £40-£120.
- 9ct gold pink tourmaline ring, 1-2 ct - Typically around £150-£400.
- 9ct or 18ct gold rubellite ring with a clean, saturated stone (2 ct+) - Typically £400 upwards, climbing quickly with size and clarity.
These are directional tiers to help set expectations, not quotes. For live prices and current stock, check the collection links further down.
Choosing a Pink Tourmaline Ring
- Look at the stone in daylight and under indoor lighting. Pink can warm or cool a little.
- Check the whole face of the stone. A good cut shows even colour with no dull "window" in the middle.
- Rose gold and yellow gold warm up pink stones. White gold and silver make them feel cooler and crisper.
Browse our current tourmaline rings or the wider tourmaline jewellery range to compare shades side by side.
A note on meaning: in crystal tradition, pink tourmaline is linked with the heart, compassion and gentle emotions. That's a belief passed down through folklore, not a medical or scientific claim. Plenty of people wear it simply because they love the colour.
Watermelon Tourmaline
Watermelon tourmaline is exactly what it sounds like. A pink core wrapped in a green rim, like a slice of the fruit. (Occasionally the colours run the other way round.)
It happens because the chemistry in the growing crystal changes over time. Manganese-rich conditions produce the pink; the green in watermelon tourmaline is mainly caused by iron. When the growing environment shifts partway through, both colours get locked into the same crystal in distinct bands.
Is watermelon tourmaline real? Yes. It's entirely natural, and it's one of the most recognisable tourmaline types. The name is a trade name rather than a separate species.
Because the banding runs along the length of the crystal, cutters often slice it thinly across the crystal to show the full "watermelon" circle, then polish the slice. You'll see these as pendants and earrings more often than as rings, because thin slices are more vulnerable to knocks. In rings, a bi-colour oval or emerald cut that keeps the two colours side by side is a safer choice for everyday wear.
When you're comparing watermelon stones, look for crisp, well-defined colour zones. Muddy transitions between pink and green are less valuable than clear contrast.
Paraiba Tourmaline
Paraiba is the one that makes gemmologists lean in. It glows in shades of electric blue, turquoise and blue-green that look almost lit from within.
What causes it: copper. Most tourmaline gets its colour from iron or manganese. Paraiba's neon intensity comes from copper in the crystal, usually working alongside manganese. The stones were first found in the late 1980s in the state of Paraíba, Brazil, which gave the variety its name. Copper-bearing tourmaline has since been found in Mozambique and Nigeria too. Trade bodies and labs treat these stones as paraiba-type when copper is the cause of colour, though many buyers and dealers still place a premium on Brazilian origin.
Why Paraiba Is So Expensive
It comes down to a few things working together:
- Rarity - Copper-bearing tourmaline is uncommon, and the finest neon colours are rarer still.
- Colour - Nothing else in the tourmaline family looks quite like it.
- Size - Clean paraiba of any real size is very hard to find, and price climbs steeply with carat weight.
- Origin and paperwork - A gem lab report confirming copper content, and sometimes origin, can have a large effect on value.
If you're considering a paraiba-type stone, ask for an independent laboratory report. It's the one variety where documentation genuinely matters to the price, and where a well-made lookalike (such as a blue-green apatite or a treated stone sold under a vague name) can catch out an unwary buyer.
Green Tourmaline
Green is the most common tourmaline colour and one of the most wearable. The trade name verdelite covers the whole range, from pale mint to deep bottle green. The colour comes mostly from iron, with chromium and vanadium involved in the richest stones.
Chrome tourmaline is the premium end. Coloured by chromium (and often vanadium), it shows a vivid, slightly emerald-like green and is scarcer than ordinary green. It's an appealing alternative for people who love emerald but would rather have a tougher, usually less included stone. (Tourmaline is slightly softer than emerald, so the gain is toughness, not scratch resistance.) The trade name also covers chromium-rich dravite and uvite, so the species on a lab report can vary.
Greens tend to be cleaner than reds, so you can often find a larger, brighter stone for the money. A step-cut such as an emerald cut shows off the colour well and suits long, slender rings.
Black and Other Varieties
Black tourmaline (schorl) is the most abundant form. It's opaque, glossy and dark, and it's usually cut as beads, cabochons or simple faceted shapes. A lot of the online interest in black tourmaline is crystal-collector interest, where it carries a protective reputation in folklore. In jewellery, it's an affordable, understated choice that goes with anything.
Indicolite is blue tourmaline, ranging from steely blue to blue-green teal. It's less common than pink or green, and quite different from paraiba. Indicolite gets its colour from iron rather than copper, so it's softer in tone and priced much lower.
A few more tourmalines worth knowing:
- Bi-colour and parti-colour stones - Show two or more colours in one gem, with watermelon being the best-known example.
- Cat's eye tourmaline - When a stone contains fine, parallel hollow channels or fibres, cutting it as a cabochon produces a thin bright band of light that glides across the surface as you tilt it.
- Dravite - Brown tourmaline, usually found in earthy, honey-to-chocolate shades.
Value Drivers
Like most coloured stones, tourmaline is priced by a handful of factors. In rough order of importance:
- Colour - This is the big one. Strong, even saturation in a pleasing hue beats everything else. Pale and very dark stones are worth less than a vivid middle tone.
- Clarity - Tourmaline is graded by eye. Pink and rubellite are expected to show a few inclusions, so "eye-clean" is what buyers look for. Paraiba and green stones are usually held to a tighter standard.
- Carat weight - Price per carat climbs with size, especially for rare colours. Size is also where paraiba prices jump most dramatically.
- Cut - A well-cut stone shows even colour and sparkle, and cutters work around pleochroism to place the best colour face-up. A poor cut can leave a dead spot in the middle or a washed-out look.
- Origin (mostly for paraiba) - For paraiba-type stones, the country can affect the price. For other colours, origin matters far less.
- Treatment - Disclosed, stable treatment is normal. Undisclosed treatment is a problem. More on that next.
Is tourmaline an expensive gem overall? Not usually. Most colours sit in the accessible-to-mid range, with paraiba the outlier. That's a big part of its appeal.
Treatments
Treatment is a normal part of coloured-gemstone life, and the rule is simple: it should be disclosed.
- Heat treatment - The most common. It can lighten, brighten or improve the colour of some tourmaline (including paraiba-type stones), and it's regarded as stable and permanent.
- Irradiation - Has been used to deepen pink and red colours in pale stones. Colour from irradiation can be less stable than heat-treated colour, so ask whether a stone has been irradiated.
- Fracture or cavity filling - Occasionally used on included stones, especially rubellite, to improve apparent clarity. Filled stones can be damaged by heat, harsh chemicals and cleaners, so they need gentler care, and the filling should always be disclosed.
If you're buying a stone of any real value, ask what treatments it has had, and for a lab report on the rarer colours. For more on how treatments are described and graded, the GIA tourmaline pages and the Gem-A site are good independent places to read further.
Durability and Care
With a Mohs hardness of 7 to 7.5, tourmaline is tough enough for everyday jewellery and holds a polish well. It's a sensible choice for rings, though it isn't indestructible. Sharp knocks can chip it, and some stones have cleavage-like weaknesses along fractures.
Can tourmaline go in water? Yes, plain water is fine for the stone itself. Rinsing and washing hands won't harm it. We'd still take rings off for swimming and heavy washing-up, mostly to protect the metal and the setting.
Simple care:
- Clean with lukewarm water, a drop of mild washing-up liquid and a soft brush.
- Rinse and dry with a soft cloth.
- Avoid ultrasonic cleaners and steam for stones with visible inclusions or fracture filling. Vibration can extend fractures and heat can affect filled stones.
- Keep away from sudden temperature changes, harsh bleach and abrasive cleaners.
- Store apart from harder gems such as diamond and sapphire so they can't scratch it.
- Take rings off before gym sessions, gardening or heavy DIY.
Tourmaline can also pick up dust because of a natural electric charge when heated or rubbed, so a quick wipe now and then keeps it looking bright.
If you're asking whether tourmaline suits an engagement ring, it can, provided you pick a cleaner stone, choose a protective setting (a bezel or a low-profile claw setting) and accept it'll need gentler treatment than a diamond.
On hallmarking: gold, silver and platinum jewellery sold in the UK above the legal weight thresholds must carry a hallmark from a UK Assay Office, which confirms the precious-metal purity. It's worth checking on any ring with a precious-metal band, as the metal part of the piece is regulated separately from the gemstone.
Which Tourmaline Colour Suits You?
A quick guide, based on style and tone rather than rules:
- You like soft, romantic colour - Pink tourmaline. It's flattering on most skin tones and pairs well with rose gold.
- You want something bolder - Rubellite, with its raspberry-red depth, works beautifully in yellow gold.
- You like a bit of fun and colour contrast - Watermelon. It's a statement stone and a natural conversation starter.
- You love fresh, natural tones - Green tourmaline, especially in yellow gold or silver.
- You prefer cool, quiet blues - Indicolite.
- You want a once-in-a-while treasure - Paraiba, if the budget allows and the paperwork's in order.
- You want something dark, versatile and low-cost - Black tourmaline.
As for who should wear pink tourmaline, there's no real restriction. In crystal folklore it's often linked with affection, calm and the heart, and some traditions suggest it suits anyone seeking gentle encouragement. That's tradition, not science, and anyone can wear it.
Tourmaline as a Birthstone and Anniversary Gem
Tourmaline is one of the two birthstones for October, alongside opal, which makes it a thoughtful gift for an autumn birthday. It's also traditionally associated with the eighth wedding anniversary.
We've covered the birthstone side in depth already, so rather than repeat it here, read our October birthstones guide to opal and tourmaline. If you'd rather see the full year at a glance, our birthstones by month UK guide runs through all twelve months. For October's other birthstone specifically, our opal engagement rings guide covers settings and durability. Or browse the October birthstone collection for current stock.
Final Word
Tourmaline's real charm is range. Pink and rubellite for warmth, watermelon for personality, green for freshness, black for everyday ease and paraiba for the rare occasion when only an electric glow will do. Start with the colour you love, check the stone in different lights, ask about treatments, and let the budget guide the tier. If you'd like to see the colours in person-sized form, browse our tourmaline rings.