We found these excellent jewellery items being made by the lovely people at Yellow Owl Workshop, and we've picked out our favourite mathematical jewellery for you.
All items come packaged in a funky glass jar, and these RGB/CMYK three-way Venn diagram overlapping colour earrings are great for showing your love for colour mixing, on screen or in print. The earrings are made from cloisonné enamel on petite metal studs, gilded in 22 carat gold with hypoallergenic posts. Each earring is 0.5" (1.3 cm) or slightly smaller.
Price = 1789 pence (the 278th prime number) = £17.89