Fortnum's hot air balloon charm is crafted from 925 sterling silver and finished in eau de nil enamel. Green Park near our Piccadilly store was the site of the first London hot air balloon launch, and hot air balloon designs have long adorned the walls and menus in our restaurants. In 2013 we launched our very own life-size hot air balloon – in eau de nil and gold of course. Dimensions: Approx: 15mm x 20mm. Presented in an eau de nil box.