![](https://static.dezeen.com/uploads/2016/05/patina-jesmonite-yenchen-yawen-studio-clerkenwell-design-week-2016-landscape-of-oxidation-product-design-natural-organic-process-making-images_dezeen_936_3.jpg)
YenChen YaWen Studio's Jesmonite vessels change colour over time
Clerkenwell Design Week 2016: London-based YenChen YaWen Studio has combined Jesmonite with metal powders to create a series of candle holders, pots and vases that oxidise and change colour as they age (+ slideshow). More