Elegant Colour Theory enamel rings from Astley Clarke. In 18ct yellow gold vermeil, designed by the Astley Clarke creative design team, in a myriad of seasonal colours. With an inlay of hand-mixed enamel, they're designed to stack up for a limitless combination of colours. The Heather Bloom ring is 3mm wide, and the Duck Egg ring is 5mm wide. All other Colour Theory rings are 4mm wide. The highly covetable Colour collection features stackable designs, with a spectrum of hand mixed enamels and hand-cut gemstones in Astley Clarke’s signature flower setting. Putting the spotlight on individuality and collectability, the range inspires the wearer to create their own unique look. Brand : Astley Clarke. Jewellery Type : Rings. Main Stone Type : Enamel. Material : 18ct gold vermeil. Ring Size : L.