I met Solange Azagury-Partridge in her first London salon in the Notting Hill area. It was the early 2000s and I was looking for the famous Hotlips hand-enameled lip rings in hyper pop colors. Inspired by the four basic colors of lipstick, Classic Red, Nude, Bubblegum Pink and Black Cherry, Hotlips have now become icons in contemporary designer jewelry, included in the permanent jewelry collection on display at the Victoria & Albert Museum in London. A veritable brand, Hotlips by Solange, comes complete with its own boutique. «Before the digital revolution, we used to write letters,»...