Every Pearl Type Explained

There's a pearl that comes from a sea snail, can't be farmed by anyone on earth, and has a wavy, shimmering pattern across its surface that genuinely looks like fire moving under the surface of the stone. That's just one of at least eight distinct types of pearl, and most people have only ever seen the plain round white kind. Here's what makes a pearl different from everything else on this list. It's the only gem made by a living animal. A pearl forms when an oyster, mussel, or sea snail coats an irritant in layer after layer of nacre, the same material lining the inside of its shell. Where it forms, which animal makes it, and how it's harvested all change the result completely. And almost nothing called pearl today is wild. Most are cultured, meaning a farmer starts the process, but the pearl still grows exactly the way nature intended. Let's go through all eight. Start with the classic. Akoya pearls come from a small saltwater oyster farmed mainly in Japan. And they're the pearl most people picture when they think pearl necklace. Perfectly round, white or cream, often with a subtle rose or silvery sheen. They're also the smallest of the major cultured pearls, usually between 2 and 9 millimeters. And the farming process is the most labor intensive of any pearl on this list, with each oyster checked and graded individually. That combination of small size and heavy labor is part of why Akoya pearls have stayed a luxury staple for over a century. Freshwater pearls come from mussels rather than oysters, farmed mostly in lakes and rivers in China. Here's the wild part. While a saltwater oyster can usually only produce one pearl at a time, a single freshwater mussel can be nucleated in dozens of places and produce up to 20 or more pearls simultaneously. That's a big part of why freshwater pearls are so much more affordable. They also come in a much wider range of natural shapes and colors than Akoya. Rice-shaped, button-shaped, baroque, in white, pink, lavender, and peach. None of it died. The color comes straight from the mussel. Tahitian pearls come from the black-lipped oyster, farmed almost exclusively around French Polynesia. And they're famous for colors no other pearl naturally has. Black, gray, green, blue, even a deep purple sometimes called peacock or aubergine. None of that color is added afterward. It comes directly from the oyster's own nacre, which is naturally dark. They're also noticeably bigger than Akoya, typically 8 to 18 millimeters, which is part of why a single Tahitian pearl pendant can cost as much as an entire Akoya necklace. South Sea pearls take size even further. They're the largest cultured pearls in the world, sometimes over 18 millimeters, grown in a different oyster species found around Australia, Indonesia, and the Philippines. They come in white and a rich natural gold, and the gold ones in particular can't be replicated by any other pearl type. Part of why South Sea pearls are the most expensive on this list isn't just the size, it's the time. While an Akoya pearl takes about a year to grow, a South Sea pearl takes 2 to 4 years, and a large percentage of oysters don't produce a usable pearl at all after all that waiting. If size versus time tradeoffs like that are the kind of thing that gets you interested, this series has a lot more of it coming. Subscribing means you won't have to go looking for the next one. Keshi pearls are essentially a byproduct. They form when an oyster rejects or expels the bead that was implanted to start a cultured but keeps producing nacre around whatever tissue is left behind. Because there's no bead inside, a Keshi pearl is 100% solid nacre, which often makes it more lustrous than a regular cultured pearl of the same size, even though it's usually irregular or baroque in shape rather than round. They're technically a mistake, but collectors specifically seek them out for that extra shine. And now, back to where we started. Conch pearls come from the queen conch, a large sea snail, not an oyster at all. And they occur in roughly 1 in every 10,000 to 15,000 conch harvested, almost always for food rather than pearls. They're usually pink to salmon orange, and the best ones show that flame structure you saw at the very start of this video, a wavy, shimmering pattern across the surface that genuinely looks like fire moving under the surface of the pearl. Nobody has figured out how to reliably culture them, so every conch pearl in existence is wild found, which is a huge part of why they're some of the most expensive pearls per carat in the world. Mabe pearls, also called blister pearls, grow differently from everything else here. Instead of forming freely inside the oyster's tissue, they grow attached to the inside of the shell itself, which means they come out as a dome or hemisphere rather than a sphere. That flat back gets cut away from the shell, and a backing is added to finish the piece. The upside is size, mabe pearls can be grown much larger than a round pearl from the same oyster, which is why they're popular for large statement earrings and pendants at a fraction of the price. And finally, abalone pearls, the rarest and strangest on this list. They come from abalone, a large sea snail with a shell famous for its rainbow-colored interior, and that same rainbow effect shows up in the pearls themselves. Almost no abalone pearl is round. Most are horn-shaped or wildly irregular, and like conch pearls, nobody has found a reliable way to farm them. Everyone is wild found, which means every single abalone pearl that exists is genuinely one of a kind. No two have ever looked exactly the same. So from a perfectly round white pearl that took a year of careful farming, to the flame-patterned pearl you saw at the start of this video, one that can't be farmed at all, pearl covers a lot more ground than most people realize.