By Riana Courtis, Graduate Gemmologist (GIA)
Pearls have an energy that’s hard to fake. They’re calm, luminous, and quietly powerful — shaped by time rather than force. In this second instalment from The Pearl Ladies, we return to the beginning of a pearl’s life to understand how nature creates one of the world’s most enduring jewels.
Inside the Oyster: Where It All Begins
A pearl’s story starts inside a mollusc, most commonly an oyster, living undisturbed in the ocean. When a tiny irritant enters the shell — a grain of sand, a fragment of shell, or organic matter — the oyster responds instinctively.
To protect itself, it secretes nacre. This is the same luminous substance that forms mother-of-pearl, prized for its soft glow and depth. The oyster coats the irritant again and again, laying down microscopic layers that slowly build over time.
There’s nothing rushed about this process. Nature works at its own pace — and that patience is exactly what gives pearls their quiet magic.
Layer by Layer: Nature Builds a Jewel
As nacre accumulates, the pearl begins to take shape. Each layer reflects light slightly differently, which is what creates a pearl’s signature lustre — that inner glow that feels alive rather than shiny.
This growth can take months, often years. And because every oyster, ocean, and environment is different, no two pearls ever form the same way. Subtle variations in colour, surface, and shape are not imperfections; they’re proof of origin. They’re what make each pearl individual.
Cultured Pearls, Explained Simply
Most pearls used in fine jewellery today are cultured pearls. This term is often misunderstood, so it’s worth clarifying.
Cultured means that skilled pearl farmers give nature a gentle beginning by introducing a tiny bead or piece of mantle tissue into the oyster. From that moment onward, the process is entirely natural. The oyster is returned to the sea, where it continues to form nacre exactly as it would in the wild.
Water quality, temperature, time, and care all play a role. The human hand initiates — but nature completes the work.
Time, Care, and the Role of the Farmer
Pearl farming is a long game. Oysters are monitored, cleaned, and protected over extended periods while pearls slowly develop inside them. There are no shortcuts. If conditions aren’t right, the pearl simply won’t reach its full potential.
This relationship between human stewardship and natural process is what makes pearls so special. They sit at the intersection of craft and environment — shaped by both, owned by neither.
Harvesting: The Moment of Reveal
When the time is right, divers carefully bring the oysters to the surface. Each shell is opened by hand. Inside lies a pearl that has spent years forming in darkness.
Even for professionals who’ve seen thousands, this moment never really loses its impact. Every pearl is a reveal — a reminder that patience still has value in a fast world.
From Ocean to Cape Town
Once selected, pearls begin the next chapter of their journey. Here in Cape Town, at Prins & Prins Diamonds, we approach pearls with deep respect for how they were formed.
At Huguenot House, each pearl is evaluated for lustre, surface quality, shape, and colour — always with an understanding that these jewels are the result of time, care, and nature’s hand. We don’t look for perfection. We look for character.
Every pearl we select carries its own story, shaped long before it ever becomes part of a jewel.
Looking Ahead
Understanding how pearls are formed changes how you see them. They’re not just beautiful — they’re patient. Intentional. Quietly strong.
In the next instalment, we’ll take you deeper into how pearls are evaluated and graded once they arrive in Cape Town — and what truly separates an ordinary pearl from an exceptional one.
Until then, let the glow speak for itself.