What are magnetic balls?
Magnetic balls, also sold as Neocube or Buckyballs, are sets of 216 to 1000 small neodymium magnets, usually 3 or 5 mm across, that snap together into chains, sheets, cubes and spheres. They are a building toy, a desk fidget and a geometry lesson at once. Neodymium is the strongest permanent magnet material there is, which is why such small balls hold shapes so firmly.
Who is this collection for?
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For a teenager who likes to build and shape
From 14 upwards. Magnetic balls turn into cubes, chains, spheres and geometric shapes, then back again.
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For the desk of someone who thinks with their hands
Engineers, designers, students. A Neocube is the fidget that becomes a sculpture.
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For anyone who enjoys geometry
216 or 512 magnets teach symmetry and structure without a single formula.
How to choose magnetic balls
Ball size and count decide what you can build. 5 mm balls are easier to handle; 3 mm balls allow finer detail. 216 balls make a 6x6x6 cube; 512 and 1000 open up larger structures.
| Type | Best for | Count and size | Price |
|---|---|---|---|
| 216 magnetic balls | A first set, cube and chain builds | 216 x 5 mm | £26 to £35 |
| Mini 3 mm sets | Fine detail, jewellery-like shapes | 512 x 3 mm | £30 to £40 |
| Rainbow and coloured sets | Gifts, colour patterns | 216 to 512 | £35 to £50 |
| Large 1000 ball sets | Big structures, serious builders | 1000 x 5 mm | £60 to £94 |
Magnetic balls are for ages 14 and up. Small, strong magnets are dangerous if swallowed, so keep them well away from young children and pets.
The science in two lines
Each ball is a tiny dipole. Placed in a chain, north to south, they attract; side by side they repel unless offset, which is why sheets form in a staggered pattern. The strength of neodymium (an iron, boron and rare earth alloy) lets 5 mm balls hold a cube against gravity with ease.
Our three bestsellers
Magnetic Balls: your questions, answered
Free UK delivery over £45 and 30 days to return it. For magnetism you can switch on and off, the electromagnet kits; for a different silent fidget, the infinity cubes.







