Pearl Jewellery Guide: Freshwater vs Saltwater, Care, and What to Actually Buy
Pearls are the only gem grown inside a living animal, and most of what gets sold under the word "pearl" is one of four very different things. If you're buying for yourself or a gift, the difference matters — both for what you pay and for how the piece looks twenty years from now. Here's how we think about pearls at our bench in Coquitlam, and what we tell customers who come in deciding between a $180 freshwater strand and a $4,000 Akoya one.
The four pearls you'll actually be choosing between
Cultured pearls — meaning a human-inserted bead or piece of mantle tissue triggered the growth — make up almost everything on the market. According to the Gemological Institute of America, pearls are graded on seven factors: size, shape, colour, lustre, surface, nacre quality, and matching. Origin is the shortcut most buyers use:
Freshwater pearls are grown in mussels, almost all of them in China. They're the most affordable, come in the widest range of shapes and pastel colours, and modern freshwater is much better than the wrinkled rice-shaped pearls of the 1990s. A good strand of round white freshwater pearls runs $150–$600.
Akoya pearls are saltwater pearls grown mostly in Japan, with smaller, rounder shapes (typically 6–9mm) and the mirror-bright lustre most people picture when they hear "pearl necklace." A classic Akoya strand sits at $1,500–$5,000 for solid quality.
Tahitian pearls come from black-lipped oysters in French Polynesia. They're naturally dark — peacock green, aubergine, silver, true black — and larger (8–14mm). The Tahitian industry is regulated by the CIBJO nacre-thickness standard, which is part of why prices stay firm.
South Sea pearls are the largest cultured pearls (9–18mm), grown in Australia, Indonesia, and the Philippines. White and golden South Seas are the most expensive cultured pearls on the planet — a matched strand can run into the five figures.
How to tell a real pearl from a fake
The simplest field test is the tooth test: a real pearl feels slightly gritty against the edge of your tooth because of the layered nacre. A glass or plastic imitation feels glassy-smooth. It's not infallible — coated imitations can fool the tooth test — but it sorts the cheap costume stuff out.
Other tells: real pearls are cool to the touch and warm slowly. They aren't perfectly identical to each other — even an excellent matched strand will show subtle variations under good light. The drill holes look clean and tight; cheap imitations often show paint flakes around the hole or a visible bead inside.
For anything over $500, ask whether the seller will put it in writing as "cultured saltwater" or "cultured freshwater" on the receipt. If they hedge, walk away. The Canadian Jewellers Association requires full disclosure of pearl type and any treatments under its code of ethics.
What to look for, in order
If we were buying a strand for ourselves, here's the order we'd weight the factors:
- Lustre. The single biggest driver of how the pearl reads in real light. You want a sharp reflection of the window when you hold the strand up, not a soft glow.
- Surface quality. Some pitting is normal. Heavy cratering or chalky patches drop the value fast.
- Nacre thickness. Thin nacre wears through at the drill hole within a decade. You can't see this on a finished pearl, which is why brand and provenance matter.
- Shape. Perfectly round costs the most. Off-round, drop, and baroque shapes are often the better-value buy if you like the look.
- Size and matching. Larger and more uniform = more expensive. Graduated strands cost less than uniform ones.
Caring for pearls (this is where most people go wrong)
Pearls sit at 2.5–4.5 on the Mohs hardness scale — softer than a fingernail, softer than nearly every other gemstone. They're also chemically sensitive in a way diamonds and sapphires aren't. The rules are simple:
- Pearls go on last and come off first. Perfume, hairspray, sunscreen, and even sweat dull the nacre over time.
- Wipe after wearing. A soft damp cloth, then a dry one. Once a year, a soft cloth with a drop of mild soap and lukewarm water — never the ultrasonic, never steam.
- Store flat, alone. Pearls in a jewellery box with metal chains will scratch. A soft pouch in a drawer is fine. Hanging stretches the silk thread.
- Restring every 3–5 years if you wear them regularly. Knotted silk wears out, and a snapped strand of unknotted pearls scattering across a hardwood floor is a story we hear too often.
Pearls in Coquitlam — what we see at the shop
The single most common pearl request we get is a freshwater strand for a graduation or a milestone birthday, $200–$400 range. Second most common is the repair — a snapped strand someone wore for thirty years that finally let go. We restring on silk with knots between each pearl, on site, usually a few business days. We also stock single freshwater drop earrings and pendants for under $100, which are a good way to test whether a pearl wearer likes the lustre before committing to a strand.
If you've got a strand from a grandmother that's looking grey or yellow, bring it in. Sometimes a careful cleaning is all it needs. Sometimes the nacre is too far gone and we'll tell you that too. Our pearl pieces are here if you want to start browsing.
Key takeaways
- Freshwater pearls are the affordable everyday choice; Akoya is the classic round white look; Tahitian and South Sea are the larger luxury pearls.
- Lustre matters more than size or shape — a small bright pearl beats a large dull one.
- Pearls are soft (Mohs 2.5–4.5) and chemically delicate. Always last on, first off; never ultrasonic or steam.
- Restring on knotted silk every 3–5 years if you wear them regularly.
- For anything over $500, get the pearl type and any treatments in writing on the receipt.
Frequently asked questions
Are freshwater pearls real pearls?
Yes. Freshwater pearls are real cultured pearls grown in freshwater mussels, mostly in China. They have the same nacre composition as saltwater pearls — they're just produced in higher volumes and cost less. The difference is in lustre, shape consistency, and the size of the seed used to start growth.
How long do pearls last?
A well-made pearl with good nacre thickness, worn occasionally and cared for properly, can last several generations. Pearls worn daily without care — left wet, exposed to perfume, stored against metal — can dull and pit within 10–20 years. The string itself should be replaced every 3–5 years of regular wear.
Can pearls get wet?
Pearls can briefly tolerate water but shouldn't be worn in the shower, pool, or hot tub. Chlorine, salt water, and soap residue all degrade nacre over time. If your pearls get caught in the rain, wipe them dry with a soft cloth and let the string air-dry flat before wearing them again.
What's the best pearl for an everyday necklace in Vancouver?
For daily wear in the Lower Mainland — meaning damp climate and active living — we'd recommend a good freshwater strand in the 7–9mm range with high lustre. They handle the humidity well, the cost is reasonable enough that you'll actually wear them, and replacing the string every few years is straightforward.
Sources
- Gemological Institute of America — Pearl Quality Factors
- GIA Gem Encyclopedia — Pearl
- CIBJO — World Jewellery Confederation Pearl Book
- Canadian Jewellers Association — Code of Ethics
Data sourced May 2026. Pearl market prices fluctuate — check current ranges before buying.
Visit Vanhess
We're a family-run jewellery studio at 2929 Barnet Highway in Coquitlam — five minutes off the Lougheed, easy parking, walk-ins welcome. We design and make most of what we sell on site, our goldsmith handles repairs locally, and our piercer works out of the same shop. Call (604) 653-6449, browse the ring collection, or stop in if you're nearby. We're happy to look at what you've got and tell you what we'd do.
