If you have come across the word babybelletje while looking into pregnancy gifts or nursery inspiration, you are not the only one wondering what it means. It is a soft, almost musical word, and once you learn the story behind it, the curiosity makes sense. In Dutch, the term translates loosely to “little baby bell,” and it is often used to describe a delicate pendant that expectant mothers have worn for generations. Around the world, the same piece of jewellery goes by several other names too, including the bola necklace, the harmony ball, and the angel caller. Whatever name you know it by, the idea behind it has stayed remarkably consistent over time: a soft, gentle chime meant to bring comfort to both mother and baby.
A Closer Look at the Bola Necklace
At its simplest, this is a hollow, spherical pendant, rarely larger than a large marble, worn on a long chain or cord. Inside the sphere sits a small ball or chime mechanism. As the wearer moves through her day, walking to the kitchen, reaching for a mug, bending to tie a shoelace, the pendant releases a soft, muffled ringing sound, something close to a wind chime heard from a distance. The necklace is designed to hang low, so the pendant can rest gently over the belly during pregnancy. Many mothers later shorten the chain so the pendant sits closer to the collarbone, where the familiar sound can still be heard during quiet moments with a newborn. It is less a piece of statement jewellery and more a quiet companion for the months of waiting.
Where the Pregnancy Necklace Tradition Comes From
The story behind this small chiming pendant is older than most people expect. Its most documented roots trace back to Mexico, where it is known as the Llamador de los Ángeles, or “angel caller.” According to the folklore passed down through generations, the soft ringing sound was believed to call on a guardian spirit to watch over mother and child. A similar tradition developed on the island of Bali in Indonesia, where silversmiths have long been known for handcrafting delicate chime pendants, using techniques passed from one generation of artisans to the next. Some jewellers also trace older threads in the story, pointing to small chiming ornaments that carried protective meaning in other cultures long before the modern pregnancy necklace took its current shape. Whichever version of the history is followed, the thread connecting them is remarkably similar. A mother wears something small and precious close to her body, and the sound it makes becomes part of the emotional experience of pregnancy. Over time, the tradition travelled well beyond its original regions and found a home in maternity boutiques and gift shops across Europe, including here in the UK, where it now appears regularly in baby shower gift guides.
How Does a Harmony Ball Necklace Actually Work?
The mechanism itself is simple, and that simplicity is part of the charm. Inside the outer shell of the pendant sits a smaller ball, often made of brass, which moves freely and taps gently against the inner wall with every step. There are no batteries and no complicated moving parts, just careful, considered metalwork. By the second half of pregnancy, a baby’s hearing has developed enough to pick up sounds from outside the womb, including a mother’s voice, her heartbeat, and gentle external noises such as this one. Many parents like the idea that their baby becomes familiar with the sound before birth, so that once the baby arrives, the same soft chime can offer a small sense of continuity between the womb and the world outside. This comfort is rooted more in tradition and lived experience than in clinical proof, but for many families, that emotional value is exactly the point.
Materials and Craftsmanship: What Sets a Quality Piece Apart
Since this pendant is meant to be worn daily for months and often kept for years afterward, the materials genuinely matter. Most traditional pieces are made from sterling silver, marked with a purity of 925, meaning the item is 92.5 percent pure silver alloyed with other metals for strength. Sterling silver remains popular for good reason. It is durable, generally kind to sensitive skin, and carries a soft, warm shine that suits the sentimental nature of the piece.
Some designs use gold plating over silver or brass for a warmer tone, while more affordable versions may rely on brass alone. Brass pieces can still look lovely, though they tend to tarnish faster and are more likely to cause irritation for anyone with sensitive skin. In the UK, silver jewellery weighing more than 7.78 grams must by law carry a full hallmark from one of the four UK Assay Offices, though many of these delicate pendants fall under that weight and are marked instead with a simple 925 stamp. Either way, a trustworthy jeweller or boutique should always be willing to confirm the silver content of a piece before you buy.
A few details tend to separate a well made piece from a mass produced copy:
- A clear hallmark or 925 stamp confirming the silver purity
- A smooth, even chime rather than a rattling or tinny sound
- A sturdy, well finished chain with a secure clasp, since the piece is worn for extended periods
- Handcrafted details, such as fine filigree or an open cage design, which often point to genuine artisan work rather than a factory mould
- Clear, honest information from the seller about where and how the piece was made
As interest in these necklaces has grown, the market has also filled with lower cost imitations that use thin plating or mixed metals without disclosing it. A reputable jeweller will always be transparent about materials and origin, and that transparency is usually the clearest sign of genuine quality and dependable service.
Choosing the Right Pregnancy Necklace for You
There is no single correct way to choose one of these necklaces. Some mothers prefer a plain, polished sphere, while others are drawn to open, lace like cage designs that let a peek of the inner chime show through. A few practical points can help narrow things down:
- Chain length: longer cords, often adjustable between roughly 90 and 120 centimetres, allow the pendant to sit comfortably over a growing belly
- Pendant size: smaller spheres give a softer, quieter chime, while larger ones ring a touch more clearly
- Personal touches: many designs now include a birthstone, an engraved initial, or a small charm that can be added later
- Occasion: it works well as a baby shower gift, a self bought keepsake, or a piece passed down from a mother or grandmother
Because this necklace tends to become a sentimental object rather than a passing accessory, it is worth taking a little extra time to choose one that feels personal rather than settling for the first option that appears in a search.
When and How to Wear a Chime Necklace
Most expectant mothers begin wearing their necklace from around the fourth or fifth month of pregnancy, once the belly has grown enough for the pendant to rest naturally against it. There is no strict rule about how often to wear it. Some women wear it daily as part of their routine, while others save it for quieter moments, such as a few restful minutes in the evening. After the baby arrives, the chain is often shortened so the pendant sits higher, near the collarbone, where the familiar chime can still be heard while holding or feeding the baby, while keeping the pendant safely out of the baby’s reach.
Caring for a Sterling Silver Pendant
Sterling silver needs a little gentle upkeep to keep its shine. Store the necklace somewhere dry, ideally in a soft pouch or a lined box, away from direct sunlight. Perfume, lotion, and hairspray can dull silver over time, so it helps to put the necklace on last, after the rest of a beauty routine. A soft polishing cloth is usually enough to restore its shine, and harsh chemical cleaners are best avoided, especially on pieces with detailed filigree work. With reasonable care, a well made pendant can easily last for years, ready to be worn again for a future pregnancy or handed down to a daughter one day.
A Small Sound With a Lasting Meaning
Whether you call it a bola necklace, a harmony ball, or simply a pregnancy chime pendant, the appeal of this small piece has never really been about the jewellery alone. It is about the quiet ritual of pregnancy, the sound a mother carries with her through those months, and the comfort a baby may recognise long before meeting the world. At 5ivemagazine, we enjoy tracing the stories behind small traditions like this one, the kind of details that carry real meaning for the families who choose them. For anyone searching for a gift with genuine sentiment behind it, this soft chiming necklace remains one of the more quietly meaningful choices available today.
