Tahitian pearls are the only pearls that grow naturally dark. Their black, grey, peacock-green and aubergine bodies, shot through with iridescent overtones, make them the most distinctive of the saltwater pearls. This guide explains what a Tahitian pearl actually is, the oyster and the islands behind it, how to read color, size, shape and luster, how grading works (and why a Tahitian "A" is not what you might think), and how to buy, authenticate and care for one.

What Tahitian pearls are

A Tahitian pearl is a nacreous saltwater cultured pearl produced by the black-lipped oyster Pinctada margaritifera, farmed in the lagoons of French Polynesia. It is the only pearl with a naturally dark body color — ranging from silver and grey through green, aubergine, and “peacock” to near-black. Tahitian pearls are typically 8–16 mm.

A Tahitian pearl is a nacreous, cultured saltwater pearl grown inside the black-lipped oyster Pinctada margaritifera, farmed almost entirely in the lagoons and atolls of French Polynesia. The dark "black" body color you see is natural — it comes from pigment in the oyster's nacre, not from dye — which is what sets Tahitian pearls apart from every other type.

A few terms to get right. "Black pearl" is the popular nickname, but it is loose: not every black pearl is Tahitian, and most Tahitian pearls are not jet black at all — they range across grey, green, blue, aubergine and pistachio. Under CIBJO rules, the word "Tahitian" is reserved for Pinctada margaritifera from French Polynesia. And like all pearls in the modern trade, these are cultured; the honest description is "cultured Tahitian pearl." If you are comparing types, see how they sit next to South Sea pearls and Akoya pearls.

The oyster and where they come from

Pinctada margaritifera is the black-lipped oyster native to French Polynesia and other Pacific waters. Farming takes place across the warm, clean lagoons of the Tuamotu and Gambier archipelagos and around Tahiti itself. The oyster is grafted with a bead nucleus and a piece of mantle tissue, then suspended in the lagoon for roughly 18 months to two years while it lays down nacre around the nucleus. Healthy oysters can be re-nucleated after harvesting a pearl, which is one reason Tahitian pearls reach the market in a wider range of sizes and prices than the once-only South Sea oyster. The history and culture behind the industry are covered in our blog on the allure of Tahitian pearls.

Color, size, shape and luster

Color — the headline factor

Tahitian color is described as a bodycolor plus one or more overtones and, in the finest pearls, orient (a shifting, rainbow-like iridescence). The natural palette includes:

• Black / dark grey — the classic, ranging from charcoal to near-black.
• Peacock — a deep green-black with multicolored purple, pink and blue overtones; the most prized Tahitian color. Browse peacock Tahitian loose pearls.
• Aubergine — purple-leaning, like the skin of an eggplant.
• Pistachio — a softer yellow-green.
• Silver / dove grey — lighter, cooler tones; our catalog carries pearls described as "Silver Color" and "Dark Silver."

"Peacock" is a true Tahitian term and a premium tier — it cannot be applied to South Sea or Akoya pearls. Because the color is natural, no dye is needed; if any color treatment has been applied, CIBJO and FTC rules require it to be disclosed at the point of sale.

Size

Tahitian pearls typically run 8 mm to 16 mm, with the bulk of the market between 8 and 14 mm. Our loose ranges step through 9 mm, 9–10 mm, 10 mm, 10–11 mm and up — see loose Tahitian pearls for the exact sizes in stock. As with all pearls, larger sizes with strong color and luster climb quickly in price.

Shape

Using CIBJO-aligned nomenclature you will find round, near-round, button, drop, oval, semi-baroque, baroque and circled (the ringed or grooved pearls that are especially characteristic of Tahitians). Circled and baroque Tahitians are popular in their own right — the rings often catch the orient beautifully and offer the most expressive, individual pieces.

Luster and nacre

Tahitian luster tends to be deep, almost metallic, with a complexity that dark bodycolor accentuates. GIA rates luster on the five-step Excellent / Very Good / Good / Fair / Poor scale. Look for bright, sharp reflections and, ideally, visible orient; a flat or chalky surface is the main thing to avoid. Tahitian nacre is thick, which supports both the durability and the depth of glow.

How Tahitian pearls are graded

Grading is where Tahitian pearls are most often misrepresented, so it is worth being precise.

GIA does not assign letter grades. The GIA Cultured Pearl Classification Report uses the 7 Pearl Value Factors: size, shape, color (bodycolor, overtone, orient), luster, surface, nacre quality and matching. Luster and nacre each carry their own Excellent-to-Poor rating.

French Polynesia uses an origin A–D scale, where A is the best. This is not the same as the AAA–A retail scale. When pearls move to international trade (for example through Hong Kong), they are often re-mapped to an AAA–A system — and a Tahitian "A" at origin does not equal an "A" in the AAA-system. The two scales should never be mixed on a single product description. CIBJO does not mandate any universal grade, so when you see "AAA," read it as a seller's top tier and confirm the actual color, luster and surface. (You may notice "AAA" in our loose-pearl listings; treat it as that producer-tier shorthand, qualified by the characteristics shown on each product.) Our deeper write-up is choosing your perfect Tahitian pearl.

No grade means "perfect." Even top-tier pearls allow a small share of natural surface characteristics — part of what proves a pearl is genuinely organic.

How to buy and authenticate a Tahitian pearl

1. Judge color and luster first. Decide whether you want a classic dark grey, a green-rich peacock or a softer pistachio, then favour pearls with bright, sharp reflections and visible orient over sheer size.
2. Confirm the color is natural. Tahitian black is naturally pigmented, so genuine pearls do not need dye. Dyed or irradiated pearls (sometimes sold as cheap "black pearls") must be disclosed. Ask directly; a reputable seller answers plainly. See our authentic Tahitian pearls guide.
3. Check that it is a real nacreous pearl. Genuine pearls feel cool to the touch, show slight surface texture and tiny natural variation within a matched strand; imitations feel uniformly smooth and warm. The gentle "tooth test" for faint grittiness is a quick screen, never a replacement for a lab.
4. Watch the terminology. Insist on "Tahitian" only for Pinctada margaritifera from French Polynesia. Other dark pearls exist but are not Tahitian and should not be sold as such.
5. Get a report on higher-value pieces. GIA, SSEF and Gübelin are the most respected pearl laboratories, especially for natural-color confirmation. Treat unaccredited "in-house certificates" as marketing.
6. Match to the piece. For strands, color and overtone matching across the necklace is as important as any one pearl. Explore finished pieces: Tahitian pearl necklaces, Tahitian pearl earrings, pendants, rings and bracelets, or shop everything under Tahitian pearl jewelry and the classic black pearl necklaces.

How to care for Tahitian pearls

• Last on, first off. Apply perfume, hairspray and lotion before putting pearls on; their acids and alcohols dull nacre over time.
• Wipe after wear with a soft, slightly damp cloth, then let them dry before storing.
• Store flat, separately and softly — a pouch or lined box, away from harder stones and metal that scratch nacre.
• Restring worn strands periodically, ideally knotted between pearls.
• No ultrasonic cleaners, steam, ammonia or abrasives. Mild soap and water on a soft cloth is enough.
• More detail is in caring for Tahitian pearl jewelry.

Tahitian vs South Sea vs Akoya at a glance

Factor	Tahitian	South Sea	Akoya
Oyster	Pinctada margaritifera	Pinctada maxima	Pinctada fucata
Main origin	French Polynesia	Australia, Indonesia, Philippines, Myanmar	Japan, China
Typical size	8–16 mm	8–20 mm	6–9 mm (from ~3)
Natural colors	Black, grey, peacock, aubergine, pistachio	White, silver, champagne, gold	White/cream with rose, silver, ivory overtones
Luster character	Deep, complex, metallic	Deep, satiny glow	Bright, sharp, mirror-like
Color source	Naturally dark pigment	Naturally white/golden	Naturally light
Position	Naturally dark; bold, modern	Largest; statement luxury	Classic, refined, accessible

Frequently asked questions

Are Tahitian pearls naturally black? Yes. The dark bodycolor comes from natural pigment in the Pinctada margaritifera nacre — no dye is needed. That natural color is the defining trait of a Tahitian pearl. Be wary of cheap "black pearls" that are actually dyed freshwater or treated pearls; treatment must be disclosed.

What is the most valuable Tahitian color? Peacock — a green-black with multicolored overtones — is generally the most prized, followed by other strongly saturated colors with good orient. Personal preference matters too; a clean silver-grey with high luster can be just as beautiful.

Why are some labeled "A" and others "AAA"? French Polynesia grades at origin on an A–D scale (A best), while retailers often use a separate AAA–A scale. They are different systems, and a Tahitian "A" is not an AAA-system "A." Always check which scale a seller means and look at the underlying characteristics.

Are black pearls and Tahitian pearls the same thing? Not necessarily. "Black pearl" is a colloquial nickname; true Tahitian pearls are specifically Pinctada margaritifera from French Polynesia. Some dark pearls on the market are dyed or come from other sources.

What size should I choose? 9–11 mm is the everyday sweet spot for necklaces and studs; 12 mm and up makes a bolder statement. Prioritise color and luster over chasing size.

Do they come with a certificate? Our Tahitian pieces ship with documented origin and a certificate. For high-value or natural-color purchases, an independent GIA, SSEF or Gübelin report is the gold standard.

Start with Tahitian pearls or go straight to loose Tahitian pearls for a custom piece, and see how Tahitians compare with Akoya pearls at The South Sea Pearl.

See how Tahitian pearl value is determined — luster, size, color and the value factors.

Choosing a strand? See our Tahitian pearl necklace buyer’s guide — lengths, sizes and grading.

Explore pearl colors and their meanings, including Tahitian peacock and aubergine overtones.

The oyster: learn more about Pinctada margaritifera, the species behind these pearls.