First up, the science bit. Cubic zirconia is a synthetic gemstone that’s created in a lab instead of being mined from the earth, so no worries about the environmental impact of the jewellery. It can be made to be virtually colourless (just like a diamond) as well coming in a range of different hues. The best bit? It’s designed to match the look, beauty and clarity of a diamond – but costs just a fraction of the price. And believe us when we say: it’s difficult for the untrained eye to tell the two apart.