What are freshwater pearls?
Freshwater pearls grow in freshwater mussels, in lakes and rivers, rather than in saltwater oysters. Most freshwater pearls today are cultured, which means a small starter is placed inside the mussel and the pearl grows around it over months or years. They are real pearls — just grown in fresh water instead of the sea. They come in many shapes, from round to oval to baroque, and in soft colours like white, cream, pink, and lavender.
Lustre: the shine that matters most
Lustre is the most important quality of a pearl. It is the bright, deep glow that seems to come from inside the pearl, not just a shine on the surface. A good pearl reflects light clearly — you should be able to see a sharp reflection in it. Dull or chalky pearls have thin nacre and will not improve with time, so always look for a bright, clear lustre first.
Shape and surface
Perfectly round pearls are the rarest and usually the most expensive. Near-round, oval, drop, and button shapes are all beautiful and often better value. Baroque pearls are irregular and unique — no two are alike, which many people love. Check the surface too: small natural marks are normal, but deep pits or rough patches are worth avoiding. A smooth, clean surface with high lustre is the mark of a good pearl.
Size and matching
Freshwater pearls are usually measured in millimetres. Studs and delicate pieces often use 6–8mm pearls, while strands and statement pieces may use 8–10mm or larger. For a strand or a set, look at how well the pearls match each other in size, shape, and colour — good matching is a sign of careful work.
What to check before you buy
Before buying, ask what the pearls are — genuine freshwater pearls should be described as such. Check the clasp and the stringing: strands should be knotted between pearls so that if the thread ever breaks, you lose one pearl instead of the whole strand. Look at the metal used for clasps, hooks, and chains, and choose hypoallergenic posts if you have sensitive ears. Finally, buy from a seller who answers questions clearly and offers a fair return policy.
The best pearl is the one you will enjoy wearing. Start with lustre, choose a shape you love, and pick a size that suits your style — the rest is personal taste.