Astley Clarke Colour 'Colour Theory enamel rings in 18 karat yellow gold vermeil, available exclusively from Astley Clarke. Designed by our creative design team, these collectable rings come in two widths and a myriad of seasonal colours. The medium Sea Shell enamel ring measures 4mm in width and features an ivory white enamel inlay. As girls we know that one is never enough, so each piece in the collection has been designed to seamlessly fit together, enabling you to layer colour and gemstones to suit your mood. We challenge you to add a little Astley Clarke Colour to your jewelry box and not notice the difference... a word of warning though, the combinations are limitless and the more you have the more desirable they become.