This clever ring from Solange Azagury-Partridge allows you to set your own lucky number, and change it any time you like. The ring has been fitted with seven diamond bars, each made from a tiny baguette-cut diamond flanked by two trillion-cut diamonds. These bars are fitted in such a way that they can be turned, allowing the wearer to either show the diamond bar or hide it. By getting the combination right, you can set the bars in a way to create digital-style numbers. The ring itself has been crafted from white gold that has been blackened with rhodium plating.