Understanding Pearl Types and Their Origins

Pearls are unlike any other gemstone. They are formed inside living molluscs, layer by layer, rather than being mined from the earth. That organic origin gives each pearl a unique character. The three most common types in UK jewellery boxes are freshwater, Akoya and South Sea pearls. Each comes from a different species of mollusc, a different part of the world, and a different set of expectations.

Freshwater Pearls: Versatile and Affordable

Freshwater pearls are grown in mussels that live in lakes, rivers and ponds, most often in China. They are the most widely available and the most affordable of the three. A single mussel can produce many pearls at once, which keeps prices low. Sizes typically range from 3mm to 12mm. Shapes vary enormously: round, oval, button, drop and the irregular shapes known as baroque. Colours include white, cream, pink, lavender and sometimes peachy tones.

Because freshwater pearls are almost entirely nacre, they are durable for everyday wear. Their lustre is softer than that of Akoya pearls, often described as a gentle glow rather than a mirror. When you are looking at freshwater pearls, check for smoothness and a consistent surface. For rustic styling, baroque freshwater pearls are ideal because their uneven shapes feel natural and unforced.

Akoya Pearls: Classic Lustre and Roundness

Akoya pearls come from saltwater oysters, primarily farmed in Japan, with smaller production in China and Vietnam. They are famous for their sharp, mirror-like lustre and their near-perfect roundness. Most Akoya pearls fall between 2mm and 10mm, with 6mm to 8mm being the most common for necklaces. The classic white Akoya with a pink or silver overtone is the pearl most people picture when they think of a traditional strand.

Akoya oysters produce only one or two pearls at a time, and the nacre layer is relatively thin. That thin nacre gives the intense lustre, but it also means Akoya pearls need gentle handling. Avoid storing them next to harder gemstones or metal chains that could scratch the surface. When buying, look for a sharp reflection of light on the pearl's surface. If the reflection is blurry or the colour looks patchy, the nacre may be thin or the pearl may be lower grade. A good Akoya pearl should look almost wet.

South Sea Pearls: Large and Luxurious

South Sea pearls are grown in the large silver-lipped or gold-lipped oysters found in the warm waters off Australia, Indonesia and the Philippines. These oysters are much bigger than Akoya oysters, and they produce correspondingly larger pearls. Sizes usually range from 8mm to 20mm, with 9mm to 14mm being the most popular for jewellery. Colours include white, silver, cream and a rich golden yellow.

South Sea pearls have a thick nacre, which gives them a deep, satin-like lustre rather than a hard mirror shine. Their surface is often slightly imperfect, and that is part of their charm. A perfectly round, flawless South Sea pearl is extremely rare and commands a high price. For most buyers, a slight blemish or a near-round shape offers better value. Look for a warm, even glow and a smooth skin. These pearls suit simple settings that let their size and colour speak for themselves.

Caring for Pearl and Gemstone Jewellery

Pearls are soft, ranking only 2.5 to 4.5 on the Mohs scale, and they are sensitive to acids, alkalis and abrasives. The same care applies to many porous gemstones such as opal, turquoise, amber and lapis lazuli. The golden rule is: last on, first off. Put your pearl and gemstone jewellery on after you have applied perfume, hairspray, moisturiser and make-up. Take it off before you exercise, shower or do household chores.

After wearing, wipe each piece with a soft, damp cloth and dry it with a lint-free towel. Never use ultrasonic cleaners, steam cleaners or harsh chemicals. Store pearls and soft gemstones in a soft pouch or a lined box, away from harder items. If you wear a pearl necklace often, have it restrung every year or two, as the silk thread can stretch and collect dirt. This simple routine will keep your jewellery looking lovely for decades.

Rustic-Inspired Styling with Pearls

Rustic style celebrates natural textures and earthy colours: linen, wool, leather, wood, stone and dried flowers. Pearls fit beautifully into this look, especially when you move away from perfectly matched, uniform strands. Baroque and freshwater pearls with uneven shapes feel organic and hand-made. Combine them with matte gemstone beads such as jasper, agate or moonstone for a relaxed, layered necklace.

• Try a single large baroque pearl on a leather cord or a waxed cotton thong.
• Mix freshwater pearls in cream, grey and bronze with wooden beads for a woodland feel.
• Use a short strand of small Akoya pearls as a delicate contrast to a chunky knit or tweed jacket.
• Choose South Sea pearls in golden or silver tones to add warmth to autumnal colours.

The key is balance: let the pearl's natural lustre stand out, but keep the overall look soft and unpretentious. Whether you are drawn to the affordability of freshwater, the classic shine of Akoya or the grandeur of South Sea, there is a pearl for every style and every budget.