Manufacturer · Fashion & Home Accessories
A real corozo button is easiest to recognise by its natural pattern: against the light you can see fine veins and shades that differ from button to button, while a polyester imitation is identical throughout the batch. In addition, corozo does not melt when touched with a heated needle but chars slightly with a smell of burnt wood. With a few simple checks, a buyer can establish the material at the sample stage.
Why it matters to recognise a corozo button
Corozo costs more than plastic and is chosen for its natural origin, its look and its durability. If the garment specification says "corozo" but polyester buttons are sewn on, the brand risks complaints, wrong information to the end customer and problems in supplier audits. That is why garment technologists and purchasing departments check every new sample, especially when ordering from a new source.
The good news is that most checks do not require a laboratory. Good light, a magnifier and a little experience are enough. If you want to compare for yourself, ask for samples of corozo buttons and of polyester buttons in a similar colour – the difference is obvious when they are side by side.
6 checks to recognise a corozo button
1. Pattern and veining
Examine the face and back of the button with a magnifier. Corozo has a fine, slightly irregular structure with thin veins and zones of different density, similar to wood or bone. Polyester can imitate a pattern, but it is arranged in layers and repeats. If you put ten buttons side by side, with corozo each will look slightly different.
2. Dye uptake
Corozo is dyed in depth and takes up colour unevenly – the denser areas stay lighter and the veins stand out. In dyed batches this creates a slight "cloudy" effect. Plastic buttons are coloured in the mass and have a completely even tone, and their pearl or marble effect is usually too regular.
3. Touch and temperature
Hold the button between your fingers. Corozo is hard, smooth and slightly cool at first, like stone or bone. Most plastics quickly take on the temperature of the hand and feel "warmer" and softer.
4. Sound and weight
When you drop a few buttons onto a hard table, corozo makes a denser, duller sound, while plastic makes a higher, ringing one. The difference in weight for the same size is small, but when comparing a handful of buttons an experienced hand can feel it.
5. Edges and finishing
Corozo is cut and milled from the nut, not cast. That is why there are no traces of a mould or a die seam on the edge. On ground buttons you can sometimes see a natural micro-pore or a darker zone near the back – that is where the outer part of the nut was.
6. Hot needle test
This is the most reliable home check, but do it only on one sample button, on the back. Heat a needle and touch it for a second. Plastic softens, melts and smells of burnt plastic. Corozo does not melt but only darkens and smells of burnt plant matter.
Comparison: corozo and plastic imitation
| Sign | Corozo | Polyester / other plastic |
|---|---|---|
| Pattern | Natural veins, different on every button | Repeating or absent |
| Colouring | Slightly uneven, veins show through | Completely uniform tone |
| Touch | Cool and hard | Warmer, softer |
| Hot needle | Does not melt, chars | Melts, smells of plastic |
| Edge | Milled, no mould marks | Sometimes with casting marks |
Common misconceptions
- "Uniform colour means higher quality." With corozo it is the opposite – slight variation in shade is a sign of a natural material.
- "A matte button is made of a natural material." Plastic can have a matte finish too. The pattern and the needle test are decisive.
- "Corozo and horn are the same thing." Horn is an animal material with more pronounced tonal variations and translucent zones, while corozo is plant-based and denser. See horn buttons for comparison.
- "One check is enough." Combine at least two or three checks, especially with dark dyed batches, where the pattern is harder to see.
How to protect yourself when ordering wholesale
The surest way is to work with a manufacturer that gives a clear material specification and a sample before production. Good practice is to:
- request a sample in the same colour, size and finish as the future order;
- keep the approved button as a reference for comparison on delivery;
- check random buttons from the delivered batch with a magnifier and, if in doubt, with a needle test on one button;
- request material documentation when your brand has raw material requirements.
If your product documentation states corozo, checking on receipt takes a few minutes but saves much more time in the event of a complaint.
It is also useful to train your warehouse and factory staff. A short instruction with a photo of the approved button, a description of the pattern and a list of checks helps a new employee spot a discrepancy when the goods are received, before the buttons reach the sewing line.
Corozo buttons from the manufacturer – Polkom
Polkom is a Bulgarian manufacturer of accessories for fashion, furniture, footwear and bags, based in Sofia and selling wholesale, with over 30 years of experience. We offer corozo buttons in natural and dyed versions, with an engraved logo and in standard sizes, and – like all Polkom products – they come with an OEKO-TEX® certificate. We make samples quickly so you can compare the material yourself. Send an inquiry via the contact page with the model, size and colour you want.
